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

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

A heavy ladder resting on floor and against a vertical wall may not be in equilibrium, if the floor and wall both are smooth surfaces.

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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.

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.

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

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Last Answer : The vertical deflection of an electron beam on the screen of a CRO is measured to be 8 mm. Now, the potential difference between the Y-plates is doubled, and simultaneously the pre-accelerating ... of its previous value. Then, the vertical deflection of the beam on the screen would become 32 mm

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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

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

Description : What is the heaviest thing you've ever moved?

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Last Answer : Cardboard!!! For a roof!!! The support columns!!! Ehh I would not want to live in that house. Is this for a shack in Sri Lanka?

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

Description : 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.

Last Answer : 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?

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

Description : A number of forces acting at a point will be in equilibrium if?

Last Answer : The sum of the resolved parts in any two perpendicular directions are both zero

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Description : Which of the following is the best revision of the inflated language example below The contemplation of the illuminated object on the wall for the vertical movement apparatus will render your position on the first floor irrelevant, until you make the....?

Last Answer : You should push the button to call the elevator to the first floor.

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Last Answer : is closer to the lateral wall of the orbital cavity than to medial wall

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Last Answer : is dependent on the permeability of the cell membrane to K+ being greater than the permeability to Na+

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Description : 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

Last Answer : 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 ?

Description : A soccer fan, upset by the defeat of his favorite team, slept restlessly. In his dream a goalkeeper was practicing in a large unfurnished room, tossing a soccer ball against the wall and then ... crush the ping-pong ball, how did the ping-pong find safety whithout leaving the floor? -Riddles

Last Answer : If the ping-pong ball rolls flush against the wall, the cast-iron ball cannot crush it. Those who know geometry can determine that if the diameter of a large ball is at least 5.83 (3+2(square root of ... is larger than a soccer ball is more than 4.83 times as large in diameter as a ping-pong ball.

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Description : 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?

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.

Description : 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?

Description : A force acting on a body may?

Last Answer : A force acting on a body may introduce internal stresses, balance the other forces acting on it, retard its motion, change its motion.

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Last Answer : B. Hold the metal base frame against the abutment tooth while setting

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Last Answer : D. Both ‘A’ and ‘B’ are correct

Description : Consider the following statements regarding Coulomb's theory of earth pressure: 1. It is based on wedge theory of earth pressure. 2. It assumes the wall surface to be rough. 3. It may or may not satisfy the static equilibrium condition ... 1, 2 & 3 (b) 1 & 2 only (c) 2 & 3 only (d) 1 & 3 only

Last Answer : (b) 1 & 2 only

Description : Rankine's theory of active earth pressure assumes (A) Soil mass is homogeneous, dry and cohesionless (B) Ground surface is a plane which may be horizontal or inclined (C) Back of the wall is vertical and smooth (D) All the above