Mechanical Engineering - Engineering Mechanics

21. 

The force required to move the body up the plane will be minimum if it makes an angle with the inclined plane __________ the angle of friction.

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

Answer: Option A

Explanation:

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22. 

In the shown figure, if the angle of inclination of the plane is increased, then acceleration of the system will

A. increase
B. decrease
C. remain the same

Answer: Option B

Explanation:

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23. 

The total time taken by a projectile to reach maximum height and to return back to the ground, is known as time of flight.

A. Yes
B. No

Answer: Option A

Explanation:

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24. 

The frequency of oscillation of a torsional pendulum is

A.
B.
C.
D.

Answer: Option D

Explanation:

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25. 

The range of a projectile is maximum, when the angle of projection is

A. 30°
B. 45°
C. 60°
D. 90°

Answer: Option B

Explanation:

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