A body of weight 'W' is required to move up on rough inclined plane whose angle of inclination with the horizontal is 'α'. The effort applied parallel to the plane is given by (where μ = tanφ = Coefficient of friction between the plane and the body.)

Engineering Mechanics
A body of weight 'W' is required to move up on rough inclined plane whose angle of inclination with the horizontal is 'α'. The effort applied parallel to the plane is given by (where μ = tanφ = Coefficient of friction between the plane and the body.)

P = W tanα

P = W (sinα + μcosα)

P = W tan (α + φ)

P = W (cosα + μsinα)

P = W tanα

P = W (sinα + μcosα)

P = W tan (α + φ)

P = W (cosα + μsinα)

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Engineering Mechanics
If tension in the cable supporting a lift moving downwards is half the tension when it is moving upwards, the acceleration of the lift is

g/4

g/2

None of these

g/3

g/4

g/2

None of these

g/3

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Engineering Mechanics
If two bodies having masses m1 and m2 (m1>m2) have equal kinetic energies, the momentum of body having mass m1 is _________ the momentum of body having mass m2.

Equal to

Less than

None of these

Greater than

Equal to

Less than

None of these

Greater than

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Engineering Mechanics
The range of projectile will be maximum for a given velocity of projectile, when the angle of projection (α) is

45° + β/2

β/2

60° + β/2

30° + β/2

45° + β/2

β/2

60° + β/2

30° + β/2

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Engineering Mechanics
Which of the following statement is correct in connection with projectiles?

The angle, with the horizontal, at which a projectile is projected, is known as angle of projection.

The velocity, with which a projectile is projected, is known as the velocity of projection.

A path, traced by a projectile in the space, is known as trajectory.

All of these

The angle, with the horizontal, at which a projectile is projected, is known as angle of projection.

The velocity, with which a projectile is projected, is known as the velocity of projection.

A path, traced by a projectile in the space, is known as trajectory.

All of these

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Engineering Mechanics
The velocity ratio of a single purchase crab winch can be increased by

Increasing the radius of the load drum

Increasing the length of the handle

Increasing the number of teeth of the pinion

All of these

Increasing the radius of the load drum

Increasing the length of the handle

Increasing the number of teeth of the pinion

All of these

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Engineering Mechanics

Engineering Mechanics A body of weight 'W' is required to move up on rough inclined plane whose angle of inclination with the horizontal is 'α'. The effort applied parallel to the plane is given by (where μ = tanφ = Coefficient of friction between the plane and the body.)

Engineering Mechanics If tension in the cable supporting a lift moving downwards is half the tension when it is moving upwards, the acceleration of the lift is

Engineering Mechanics If two bodies having masses m1 and m2 (m1>m2) have equal kinetic energies, the momentum of body having mass m1 is _________ the momentum of body having mass m2.

Engineering Mechanics The range of projectile will be maximum for a given velocity of projectile, when the angle of projection (α) is

Engineering Mechanics Which of the following statement is correct in connection with projectiles?

Engineering Mechanics The velocity ratio of a single purchase crab winch can be increased by

Engineering Mechanics
A body of weight 'W' is required to move up on rough inclined plane whose angle of inclination with the horizontal is 'α'. The effort applied parallel to the plane is given by (where μ = tanφ = Coefficient of friction between the plane and the body.)

Engineering Mechanics
If tension in the cable supporting a lift moving downwards is half the tension when it is moving upwards, the acceleration of the lift is

Engineering Mechanics
If two bodies having masses m1 and m2 (m1>m2) have equal kinetic energies, the momentum of body having mass m1 is _________ the momentum of body having mass m2.

Engineering Mechanics
The range of projectile will be maximum for a given velocity of projectile, when the angle of projection (α) is

Engineering Mechanics
Which of the following statement is correct in connection with projectiles?

Engineering Mechanics
The velocity ratio of a single purchase crab winch can be increased by