A ladder of weight 'w' rests against a smooth vertical wall, and rests on rough horizontal ground, the coefficient of friction between the ladder and the ground being 1/4. The maximum angle of inclination of the ladder to the vertical, if a man of weight 'w' is to walk to the top of it safely, is tan'1 x, where x is

Applied Mechanics and Graphic Statics
A ladder of weight 'w' rests against a smooth vertical wall, and rests on rough horizontal ground, the coefficient of friction between the ladder and the ground being 1/4. The maximum angle of inclination of the ladder to the vertical, if a man of weight 'w' is to walk to the top of it safely, is tan'1 x, where x is

4

43834

3

43833

4

43834

3

43833

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Applied Mechanics and Graphic Statics
Two balls of masses 3 kg and 6 kg are moving with velocities of 4 m/sec and 1 m/sec respectively, towards each other along the line of their centers. After impact the 3 kg ball comes to rest. This can happen only if the coefficient of restitution between the balls is

1/3

2/3

3/5

1/5

1/3

2/3

3/5

1/5

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Applied Mechanics and Graphic Statics
The rate of change of displacement of a body with respect to its surrounding, is known

Acceleration

Velocity

None of these

Speed

Acceleration

Velocity

None of these

Speed

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Applied Mechanics and Graphic Statics
Time of flight of a projectile on a horizontal plane, is

2u tanα/g

2u sinα/g

2u cosα/g

2u cotα/g

2u tanα/g

2u sinα/g

2u cosα/g

2u cotα/g

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Applied Mechanics and Graphic Statics
Pick up the incorrect statement from the following. In a simple harmonic motion

Velocity is minimum at the end of the stroke

Acceleration is zero at the mean position

Acceleration is minimum at the end of the stroke

Velocity is maximum at its mean position

Velocity is minimum at the end of the stroke

Acceleration is zero at the mean position

Acceleration is minimum at the end of the stroke

Velocity is maximum at its mean position

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Applied Mechanics and Graphic Statics
A 2 m long ladder rests against a wall and makes an angle of 30° with the horizontal floor. Where will be the instantaneous center of rotation when the ladder starts slipping ? i. 1.0 in from the wall ii. 1.732 m from the wall iii. 1.0 m above the floor iv. 1.732 m above the floor The correct answer is

(i) and (iii)

(i) and (iv)

(ii) and (iv)

(ii) and (iii)

(i) and (iii)

(i) and (iv)

(ii) and (iv)

(ii) and (iii)

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Applied Mechanics and Graphic Statics

Applied Mechanics and Graphic Statics The rate of change of displacement of a body with respect to its surrounding, is known

Applied Mechanics and Graphic Statics Time of flight of a projectile on a horizontal plane, is

Applied Mechanics and Graphic Statics Pick up the incorrect statement from the following. In a simple harmonic motion

Applied Mechanics and Graphic Statics
The rate of change of displacement of a body with respect to its surrounding, is known

Applied Mechanics and Graphic Statics
Time of flight of a projectile on a horizontal plane, is

Applied Mechanics and Graphic Statics
Pick up the incorrect statement from the following. In a simple harmonic motion