A ladder is inclined to a wall making an angle of 30° with it. A man is ascending the ladder at the rate of 3 m/sec. How fast is he approaching the wa

A ladder is inclined to a wall making an angle of 30° with it. A man is ascending the ladder at the rate of 3 m/sec. How fast is he approaching the wa
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A ladder is inclined to a wall making an angle of 30° with it. A man is ascending the ladder at the ... 3 m/sec. How fast is he approaching the wall ?
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A cylindrical specimen of saturated soil failed under an axial vertical stress of 100kN/m² when it was laterally unconfmed. The failure plane was inclined to the horizontal plane at an angle of 45°. The values of cohesion and angle of internal friction for the soil are respectively (A) 0.5 N/mm² and 30° (B) 0.05 N/mm² and 0° (C) 0.2 N/mm² and 0° (D) 0.05 N/mm² and 45°

Description : A cylindrical specimen of saturated soil failed under an axial vertical stress of 100kN/m² when it was laterally unconfmed. The failure plane was inclined to the horizontal plane at an angle of 45°. The values of cohesion and angle of ... N/mm² and 0° (C) 0.2 N/mm² and 0° (D) 0.05 N/mm² and 45°

Last Answer : Answer: Option B

A block of weight 20 kg slides with an initial velocity of 2 m sec down an inclined plane on to a spring of stiffness 10 kg/cm. If the co--efficient of friction is 0.2, angle ? = 30 the ratio of maximum compession of spring, neglecting friction to that while considering friction would be a.More than one b.One c.Less than one d.Depends on the stiffness of spring e.None of the above

Description : A block of weight 20 kg slides with an initial velocity of 2 m sec down an inclined plane on to a spring of stiffness 10 kg/cm. If the co--efficient of friction is 0.2, angle ? = 30 the ratio of ... be a.More than one b.One c.Less than one d.Depends on the stiffness of spring e.None of the above

Last Answer : a. More than one

In which case power required would be more a.In lifting up a weight of 100 kg at a velocity of 3 m/sec but accelerating upwards at 0.5 m/sec b.In lowering a weight of 100 kg along an a inclined plane at an angle of 45? with c.In lifting up a weight of 100 kg at a constant speed of 3 m/sec d.In lowering the weight at a constant speed of 3 m/sec e.In lowering the weight at a velocity of 3 m/sec and acceleration of 1 m/sec2

Description : In which case power required would be more a.In lifting up a weight of 100 kg at a velocity of 3 m/sec but accelerating upwards at 0.5 m/sec b.In lowering a weight of 100 kg along an a inclined plane ... speed of 3 m/sec e.In lowering the weight at a velocity of 3 m/sec and acceleration of 1 m/sec2

Last Answer : a. In lifting up a weight of 100 kg at a velocity of 3 m/sec but accelerating upwards at 0.5 m/sec

The stem of a cantilever retaining wall which retains earth level with top is 6 m. If the angle of repose and weight of the soil per cubic metre are 30° and 2000 kg respectively, the effective width of the stem at the bottom, is (A) 51.5 (B) 52.5 (C) 53.5 (D) 54.5

Description : The stem of a cantilever retaining wall which retains earth level with top is 6 m. If the angle of repose and weight of the soil per cubic metre are 30° and 2000 kg respectively, the effective width of the stem at the bottom, is (A) 51.5 (B) 52.5 (C) 53.5 (D) 54.5

Last Answer : Answer: Option C

The angle of elevation of a ladder leaning against a wall is 60° and the foot of the ladder is 4.6 m away from the wall. The length of the ladder is: a) 2.3 m b) 4.6 m c) 7.8 m d) 9.2 m

Description : The angle of elevation of a ladder leaning against a wall is 60° and the foot of the ladder is 4.6 m away from the wall. The length of the ladder is: a) 2.3 m b) 4.6 m c) 7.8 m d) 9.2 m

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A tree breaks due to storm and the broken part bends so that the top of the tree touches the ground making an angle 30° with it. The distance between the foot of the tree to the point where the top touches the ground is 8 m. Find the height of the tree. -Maths 9th

Description : A tree breaks due to storm and the broken part bends so that the top of the tree touches the ground making an angle 30° with it. The distance between the foot of the tree to the point where the top touches the ground is 8 m. Find the height of the tree. -Maths 9th

Last Answer : The broken part bends so that the top of the tree touches the ground making an angle 30 °. The distance between the foot of the tree to the point where the top touches the ground is 8 m. Original height of ... After rationalising Now we have , A`BC = AB + BC Take LCM So , original height of tree is

A 5 m ladder of mass 25 kg is placed in a position where its inclination to a vertical wall is at 30?. A 100 kg man is to climb the ladder. If the coefficient of static friction is 0.25 the height along ladder at which the slipping will be induced would be a.2.4 m b.1.6 m c.0.8 m d.1.2 m e.0.5 m

Description : A 5 m ladder of mass 25 kg is placed in a position where its inclination to a vertical wall is at 30?. A 100 kg man is to climb the ladder. If the coefficient of static friction is 0.25 the height along ladder at which the slipping will be induced would be a.2.4 m b.1.6 m c.0.8 m d.1.2 m e.0.5 m

Last Answer : c. 0.8 m

A retaining wall 6m high supports a backfill with a surcharge angle of 10°. The back of the wall is inclined to the vertical at a positive batter angle of 5°. If the angle of wall friction is 7°, then the resultant active earth pressure will act at a distance of 2 m above the base and inclined to the horizontal at an angle of (A) 7° (B) 10° (C) 12° (D) 17

Description : A retaining wall 6m high supports a backfill with a surcharge angle of 10°. The back of the wall is inclined to the vertical at a positive batter angle of 5°. If the angle of wall friction is 7°, then the resultant ... inclined to the horizontal at an angle of (A) 7° (B) 10° (C) 12° (D) 17

Last Answer : (C) 12°

A stone dropped from a baloon that was ascending at the rate of 30 ft/sec, reaches ground after 10 secs. The height of the baloon where stone was dropped was a.3420 ft b.107 dynes c.4520 ft d.2310 ft e.1310 ft

Description : A stone dropped from a baloon that was ascending at the rate of 30 ft/sec, reaches ground after 10 secs. The height of the baloon where stone was dropped was a.3420 ft b.107 dynes c.4520 ft d.2310 ft e.1310 ft

Last Answer : e. 1310 ft

Two bodies of mass 6 kg and 9 kg are connected with a light inextensile string passing over a smooth pulley with one of the bodies on a smooth inclined plane (θ = 30°) and the other hanging freely from the other end. Show that the time taken by 9 kg to pull 6 kg up the entire length is half the time taken by 6 kg to pull 9 kg over the same plane.

Description : Two bodies of mass 6 kg and 9 kg are connected with a light inextensile string passing over a smooth pulley with one of the bodies on a smooth inclined plane (θ = 30°) and the other hanging freely from the ... kg up the entire length is half the time taken by 6 kg to pull 9 kg over the same plane.

Last Answer : Given: Mass of body A (mA) = 6 kg Mass of body B (mB) = 9 kg Angle of inclination of the plane (θ) = 30° Let's assume that the acceleration of body A (aA) and body B (aB) are in opposite ... we know that the time taken (t) is given by the formula: t = √(2d/a), where d is the distance travelled

Improved uniformity is obtained if seed tube is inclined rear ward at _________ with vertical. a)5-15° b)15-30° c)30-40° d)40-50

Description : Improved uniformity is obtained if seed tube is inclined rear ward at _________ with vertical. a)5-15° b)15-30° c)30-40° d)40-50

Last Answer : b)15-30°

A particle moves along a rough plane inclined at 30? to the horizontal. The co-efficient of friction between the particle and the plane is 0.1. Its initial velocity is 15 m/sec. The ratio of the velocity of the particle when it move down the plane to that when it move up the plane would be in the regions a.8 ? 10 b.5 ? 7 c.2 ? 3 d.4 ? 6 e.10 ? 13

Description : A particle moves along a rough plane inclined at 30? to the horizontal. The co-efficient of friction between the particle and the plane is 0.1. Its initial velocity is 15 m/sec. The ratio of the velocity of the particle when it move ... be in the regions a.8 ? 10 b.5 ? 7 c.2 ? 3 d.4 ? 6 e.10 ? 13

Last Answer : b. 5 ? 7

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Description : How many image can a man see if he stands between two plane mirrors inclined at an angle of 60°?

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Horizontal distance travelled by a ball if it's thrown with initial velocity of 20 m s-1 at an angle of 30° is A. 24 m B. 56 m C. 35.3 m D. 36.3 m

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Last Answer : 35.3 m

A man of height 160 cm walks at a rate of 1.1` m/sec from a lamp post which 6m high. Find the rate at which the length of his shadow increases when he

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Last Answer : c. 18°

An aircraft is travelling at 120 kts, what angle of bank would be required for a rate 1(one) turn? a. 30° b. 12° c. 18° d. 35°

Description : An aircraft is travelling at 120 kts, what angle of bank would be required for a rate 1(one) turn? a. 30° b. 12° c. 18° d. 35°

Last Answer : c. 18°

A 2m long ladder of mass 10 kg is kept against a wall such that its base is 1.2 m away from the wall.

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A body of weight W is resting at a plane inclined at 30? to the horizontal. It is attached to a string making an angle of 60? with horizontal. If the angle of friction be 30? the tension in the string would be a.Zero b.W c.W/2 d.2W e.None of the above

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Last Answer : c. W/2

A particle is projected with speed v at angle θ to the horizontal on an inclined surface making an angle Φ (Φ < θ) to the horizontal.

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The work done in sliding a block of weight of 50 kg up a plane inclined at an angle of 30? to the horizontal so that the block is lifted through 1 m ( a.More than 50 kgm b.50 kgm c.Less than 5 kgm d.15 kgm only e.None of the above

Description : The work done in sliding a block of weight of 50 kg up a plane inclined at an angle of 30? to the horizontal so that the block is lifted through 1 m ( a.More than 50 kgm b.50 kgm c.Less than 5 kgm d.15 kgm only e.None of the above

Last Answer : a. More than 50 kgm

What information would you like to share with someone fast approaching menopause?

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A projectile is thrown at an angle of 30° to the horizontal. What should be the range of initial velocity (u)

Description : A projectile is thrown at an angle of 30° to the horizontal. What should be the range of initial velocity (u)

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The critical angle for a transport solid is 30°. Then its refractive index is (a) 2.5 (b) 1.8 (c) 1.5 (d) 2

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If the angle of incidence formed on a concave mirror at a point is 30° then the angle of reflection will be: (1) 15° (2) 30° (3) 60° (4) 90°

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Last Answer : (2) 45° with horizontal Explanation: This has to do with the equation of a parabola or trajectory which is z = (tane)x 2 cos 9) 2. We can see that if the ball is fired at a 45 degree angle from the ground, the horizontal distance will be a maximum.

The asbestos cement pipes are generally laid A. Horizontally B. Vertically C. At an angle of 30° D. At an angle of 60°

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Description : Projectile will attain its maximum range, if it is fired at an angle of A. 30° B. 47° C. 90° D. 45°

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For determining the support reactions at A and B of a three hinged arch, points B and Care joined and produced to intersect the load line at D and a line parallel to the load line through A at D'. Distances AD, DD' and AD' when measured were 4 cm, 3 cm and 5 cm respectively. The angle between the reactions at A and B is (A) 30° (B) 45° (C) 60° (D) 90

Description : For determining the support reactions at A and B of a three hinged arch, points B and Care joined  and produced to intersect the load line at D and a line parallel to the load line through A at D'.  Distances AD, DD ... reactions at A and B is  (A) 30°  (B) 45°  (C) 60°  (D) 90

Last Answer : (D) 90

The angle of intersection of a contour and a ridge line, is (A) 30° (B) 45° (C) 60° (D) 90°

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A well conditioned triangle has no angle less than (A) 20° (B) 30° (C) 45° (D) 60°

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The angle between two plane mirrors of optical square, is (A) 20° (B) 30° (C) 45° (D) 60°

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Last Answer : (C) 45° 

If the long chord and tangent length of a circular curve of radius R are equal the angle of deflection, is (A) 30° (B) 60° (C) 90° (D) 120°

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ABCD is a regular parallelogram plot of land whose angle BAD is 60°. If the bearing of the line AB is 30°, the bearing of CD, is (A) 90° (B) 120° (C) 210° (D) 270°

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Last Answer : (C) 210°

A projectile is fired at an angle to the vertical. Its horizontal range will be maximum when is (A) 0° (B) 30° (C) 45° (D) 60°

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Last Answer : (C) 45°

The maximum shear stress occurs on the filament which makes an angle with the horizontal plane equal to (A) 30° (B) 45° (C) 60° (D) 90

Description : The maximum shear stress occurs on the filament which makes an angle with the horizontal plane equal to (A) 30° (B) 45° (C) 60° (D) 90

Last Answer : (B) 45°

Select the incorrect statement. Effective angle of shearing resistance (A) Increases as the size of particles increases (B) Increases as the soil gradation improves (C) Is limited to a maximum value of 45° (D) Is rarely more than 30° for fine grained soil

Description : Select the incorrect statement. Effective angle of shearing resistance (A) Increases as the size of particles increases (B) Increases as the soil gradation improves (C) Is limited to a maximum value of 45° (D) Is rarely more than 30° for fine grained soil

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The coefficient of active earth pressure for a loose sand having an angle of internal friction of 30° is (A) 1/3 (B) 3 (C) 1 (D) 1/2

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Select the incorrect statement. (A) Effective cohesion of a soil can never have a negative value. (B) Effective angle of internal friction for coarse grained soils is rarely below 30°. (C) Effective angle of internal friction for a soil increases as state of compactness increases. (D) Effective angle of internal friction is a complicated function of mineralogy and clay size content.

Description : Select the incorrect statement. (A) Effective cohesion of a soil can never have a negative value. (B) Effective angle of internal friction for coarse grained soils is rarely below 30°. (C ... (D) Effective angle of internal friction is a complicated function of mineralogy and clay size content.

Last Answer : Answer: Option A

The angle of internal friction of clays, is usually (A) 0° to 5° (B) 5° to 20° (C) 20° to 30° (D) 30° to 45

Description : The angle of internal friction of clays, is usually (A) 0° to 5° (B) 5° to 20° (C) 20° to 30° (D) 30° to 45

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The intensity of active earth pressure at a depth of 10 metres in dry cohesionless sand with an angle of internal friction of 30° and with a weight of 1.8 t/m3 , is (A) 4 t/m2 (B) 5 t/m2 (C) 6 t/m2 (D) 7 t/m2

Description : The intensity of active earth pressure at a depth of 10 metres in dry cohesionless sand with an angle of internal friction of 30° and with a weight of 1.8 t/m3 , is (A) 4 t/m2 (B) 5 t/m2 (C) 6 t/m2 (D) 7 t/m2

Last Answer : Answer: Option C

What is the value of included angle of a triangular notch for maximum discharge? (A) 30° (B) 60° (C) 90° (D) 120°

Description : What is the value of included angle of a triangular notch for maximum discharge? (A) 30° (B) 60° (C) 90° (D) 120°

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The anchorage value of a hook is assumed sixteen times the diameter of the bar if the angle of the bend, is (A) 30° (B) 40° (C) 45° (D) All the above

Description : The anchorage value of a hook is assumed sixteen times the diameter of the bar if the angle of the bend, is (A) 30° (B) 40° (C) 45° (D) All the above

Last Answer : Answer: Option D

In a right angle bend of a road provided with a transition throughout, the maximum polar angle will be (A) 10° (B) 15° (C) 20° (D) 30°

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A ship strikes the berth generally at an angle (A) 90° with the face of the dock (B) 45° with the face of the dock (C) 30° with the face of the dock (D) 10° with the face of the dock

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Last Answer : (D) 10° with the face of the dock