# Mechanical Engineering - Engineering Mechanics

### Exercise :: Engineering Mechanics - Section 1

6.

The velocity ratio in case of an inclined plane inclined at angle θ to the horizontal and weight being pulled up the inclined plane by vertical effort is

 A. sin θ B. cos θ C. tan θ D. cosec θ

Explanation:

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7.

The range of projectile on a downward inclined plane is __________ the range on upward inclined plane for the same velocity of projection and angle of projection.

 A. less than B. more than C. equal to

Explanation:

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8.

The angle of inclination of a vehicle when moving along a circular path __________ upon its mass.

 A. depends B. does not depend

Explanation:

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9.

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.)

 A. P = W tanα B. P = W tan(α + φ) C. P = W (sinα + μcosα) D. P = W (cosα + μsinα)

Explanation:

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10.

If the resultant of two equal forces has the same magnitude as either of the forces, then the angle between the two forces is

 A. 30° B. 60° C. 90° D. 120°