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.

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 2m long ladder of mass 10 kg is kept against a wall such that its base is 1.2 m away ... ladder? How much is the horizontal reaction at the wall?
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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

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

Last Answer : d) 9.2 m

On a ladder resting on smooth ground and leaning against vertical wall, the force of friction will be (A) Towards the wall at its upper end (B) Away from the wall at its upper end (C) Upwards at its upper end (D) Downwards at its upper end

Description : On a ladder resting on smooth ground and leaning against vertical wall, the force of friction will be (A) Towards the wall at its upper end (B) Away from the wall at its upper end (C) Upwards at its upper end (D) Downwards at its upper end

Last Answer : (C) Upwards at its upper end

On the ladder resting on the ground and leaning against a smooth vertical wall, the force of friction will be (A) Downwards at its upper end (B) Upwards at its upper end (C) Perpendicular to the wall at its upper end (D) Zero at its upper end

Description : On the ladder resting on the ground and leaning against a smooth vertical wall, the force of  friction will be  (A) Downwards at its upper end  (B) Upwards at its upper end  (C) Perpendicular to the wall at its upper end  (D) Zero at its upper end 

Last Answer : (D) Zero at its upper end 

A heavy ladder resting on floor and against a vertical wall may not be in equilibrium, if (A) The floor is smooth, the wall is rough (B) The floor is rough, the wall is smooth (C) The floor and wall both are smooth surfaces (D) The floor and wall both are rough surfaces

Description : A heavy ladder resting on floor and against a vertical wall may not be in equilibrium, if (A) The floor is smooth, the wall is rough (B) The floor is rough, the wall is smooth (C) The floor and wall both are smooth surfaces (D) The floor and wall both are rough surfaces

Last Answer : (C) The floor and wall both are smooth surfaces

On the ladder resting on the ground and leaning against a smooth vertical wall, the force of friction will be?

Description : On the ladder resting on the ground and leaning against a smooth vertical wall, the force of friction will be?

Last Answer : On the ladder resting on the ground and leaning against a smooth vertical wall, the force of friction will be zero at its upper end.

On a ladder resting on smooth ground and leaning against vertical wall, the force of friction will be?

Description : On a ladder resting on smooth ground and leaning against vertical wall, the force of friction will be?

Last Answer : On a ladder resting on smooth ground and leaning against vertical wall, the force of friction will be upwards at its upper end.

A heavy ladder resting on floor and against a vertical wall may not be in equilibrium, if?

Description : A heavy ladder resting on floor and against a vertical wall may not be in equilibrium, if?

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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 rate of 3 m/sec. How fast is he approaching the wa

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In a cantilever retaining wall without a heel slab (A) Thickness of the stem is kept same throughout (B) Base slab is made 10 cm thicker than the stem (C) Width of the base slab is kept 0.7 time the total height of the wall (D) All the above

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At equilibrium the concentration of water in vapour phase (C* ) in kg/m3 of air space and the amount of water (m) adsorbed per kg of dry silica gel are related by, C* = 0.0667m. To maintain dry conditions in a room of air space 100m3 containing 2.2 kg of water vapour initially, 10 kg of dry silica gel is kept in the room. The fraction of initial water remaining in the air space after a long time (during which the temperature is maintained constant) is (A) 0.0 (B) 0.2 (C) 0.4 (D) 1.0

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From the following in which FMS layout machine tools are kept along a straight line. a.Loop layout b.In line layout c.Ladder layout d.Open field layout

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One kg of gas occupying 0.1m^3 at pressure of 14 bar is expanded at constant pressure to 0.2m^3. Determine an initial and final temperature of gas. Take Cp=1.008KJ/KgK, Cv =0.72KJ/KgK.

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Pick out the wrong statement. (A) In the McCabe-Thiele diagram for binary distillation, vertical feed line represents saturated liquid feed and horizontal feed line represents saturated vapour feed (B) In small columns, local efficiency is larger than Murphree efficiency; in large columns local efficiency is smaller than Murphree efficiency (C) For Laminar flow over a plate of length L, the local mass transfer co￾efficient at a distance L from the leading edge is 1.5 × 10 -2m/s. Then the average mass transfer co-efficient for the plate is 2 × 10 -2m/s (D) The concentration and hydrodynamic boundary layers over a flat plate are of equal thickness, if Schmidt number is equal to unity

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A 600kg hammer of a pile driver is lilted 2m the pilling head. What is the change of potential energy? If the hammer is realest. What will be its velocity and the instant if it sticks the pilling?  a. 10,772 N-m and 5.26m/s  b. 13,200 N-m and 5.26m/s  c. 11,772 N-m and 6.26m/s  d. 11,77 2N-m and5.26m/s ∫PE = mgo(∫Z)/gc

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A train is moving eastward at 10 m/sec. A waiter is walking eastward at 1.2m/sec; and a fly is flying toward the north across the waiter’s tray

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A conductor of length 5 cm is moved paralllel to itself with a speed of `2m//s`, perpendicular to a uniform magnetic field of `10^(-3) Wb//m^(2).` the

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Do you feel more comfortable on a self supporting, "A" frame type of tall ladder, or one that leans against a tree, or house, for support?

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Last Answer : With regular ladders I always fear that the base will slide backwards. On the other hand, A-type ladders seem awfully wobbly and prone to tipping over. I prefer permanently affixed ladders.

what- a ladder rests against a building at an angle as shown, with endpoints (-2,0 ) and (0,8). what is the slope of the ladder?

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A wire having a linear density `0.1 kg//m` is kept under a tension of `490N`. It is observed that it resonates at a frequency of `400 Hz`. The next hi

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Pick up the incorrect statement from the following regarding fire hydrants (A) Fire hydrants are fitted in water mains at 100 m to 150 m apart at fire (B) The minimum water pressure hydrants, is kept 1.5 kg/cm2 (C) The water at pressure 1 to 1.5 kg/cm2 is made available for 4 to 5 hours for constant use (D) None of these

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A rectangular tank 10 m x 5 m in plan and 3 m deep is divided by a partition wall parallel to the shorter wall of the tank. One of the compartments contains water to a depth of 3 m, and the other a lighter liquid of specific gravity 0.75 to a depth of 2 m. The resultant pressure thrust on the partition wall is (a) 1000 kg (b) 1500 kg (c) 2000 kg (d) 2500 kg

Description : A rectangular tank 10 m x 5 m in plan and 3 m deep is divided by a partition wall parallel to the shorter wall of the tank. One of the compartments contains water to a depth of 3 m, and the other a lighter ... pressure thrust on the partition wall is (a) 1000 kg (b) 1500 kg (c) 2000 kg (d) 2500 kg

Last Answer : Correct Answer is 15000 kg

The best way to prepare students for the transition to the next step in the educational ladder is to Options: A) Make a visit to the school building B) Receive visitors from the new school C) Prepare a booklet about the new school D) There is no best way for such orientation

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A uniform rod of mass 2m is held horizontal by two sturdy, practically inextensible vertical strings tied at its ends.

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A rectangular plot has a concrete path running inner side of the plot is used as a lawn, which has an area of 432 sq.m. If the width of the path is 4 m and the length of the plot is greater than its breadth by 2m, what is the area of the rectangular plot? 1) 980 m^2 2) 975 m^2 3) 984 m^2 4) 960 m^2 5) 965 m^2

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Last Answer : 4) 960 m^2

A cantilever beam of length of 2m carries a U.D.L. of 150 N/m over its whole span. The maximum shear force in the beam will be (a) 150 N (b) 300 N (c) 150 N-m (d) 600 N-m

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Last Answer : (b) 300 N

The rungs of a 10 foot ladder attached to a ship are 1 foot apart. If the water is rising at the rate of one foot an hour, how long will it take until the water covers over the ladder? -Riddles

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An electron is moving with a velocity of `10^(7) m s^(-1)`. Find its energy in electron volts. (Mass of electron `=9.1xx10^(-31) kg` and charge of ele

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A man lifts a stone weighting 300 g from the ground to a height of 2m and throws it horizontally with a velocity of 6 m/sec. The work done by the man is a.7.686 J b.11.286 J c.5.886 J d.8.343 J e.Tapered bearing

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Last Answer : b. 11.286 J

If (log x)/(l + m - 2n) = (log y)/(m + n - 2l) = (log z)/(n + l - 2m), then xyz is equal to : -Maths 9th

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Last Answer : Let l+m−2nlogx​=m+n−2llogy​=n+l−2mlogz​=k(say) So, we get logx=k(l+m−2n) ....... (i) logy=k(m+n−2l) ....... (ii) logz=k(n+l−2m) ....... (iii) ∴logx+logy+logz=k(l+m−2n)+k(m+n−2l)+k(n+l−2m) ⇒logx+logy+logz=kl+km−2kn+km+kn−2kl+kn+kl−2km ⇒log(xyz)=0 ⇒logxyz=log1 ⇒xyz=1

If (log x)/(l + m - 2n) = (log y)/(m + n - 2l) = (log z)/(n + l - 2m), then xyz is equal to : -Maths 9th

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Last Answer : (b) 1Let \(rac{ ext{log}\,x}{l+m-2n}\) = \(rac{ ext{log}\,y}{m+n-2l}\) = \(rac{ ext{log}\,z}{n+l-2m}\) = k. Thenlog x = k(l + m – 2n), log y = k(m + n – 2l); log z = k(n + l – 2m) ⇒ log x + log y + log z = k(l + m – 2n) + k(m + n – 2l) + k(n + l – 2m)⇒ log(xyz) = 0 ⇒ log(xyz) = log 1 ⇒ xyz = 1.

If `(m + 2) sintheta + (2m-1) costheta = 2m+1`, then

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Solve : `2m + 5 gt 9 - 4m, m in Q`

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Solve for `m : 3(4m + 5) - 4(3-2m) = 13`

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At a given instant three-point masses m, 2m, and 3m are equidistant from each other.

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Pick up the correct statement from the following: (A) Hoop strain of the walls of a cylinder due to liquid is (pd/2tE) (1 - 1/2m) (B) Longitudinal strain in the walls of a cylinder due to liquid is (pd/2tE) (1/2 - 1/m) (C) Volumetric change in the cylinder due to liquid is (pd/2tE) (5/2 - 2/m) (D) All the above

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A truss containing j joints and m members, will be a simple truss if (A) m = 2j - 3 (B) j = 2m - 3 (C) m = 3j - 2 (D) j = 3m - 2

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Last Answer : (A) m = 2j - 3 

A shaft is subjected to bending moment M and a torque T simultaneously. The ratio of the maximum bending stress to maximum shear stress developed in the shaft, is (A) M/T (B) T/M (C) 2M/T (D) 2T/M

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If h1 and h2 are the differences in level between ground and the formation levels, m is the slope of the sloping sides. D is the distance between the cross sections then, Prismoidal correction for a level section is (A) D/2m(h1 - h2) (B) D/3m(h1 - h2) (C) D/6m(h1 - h2)2(D) D/6m(h1 - h2)3

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Last Answer : (C) D/6m(h1 - h2)2