Mechanical Engineering - Engineering Mechanics

46. 

The wheels of a moving car possess

A. potential energy only
B. kinetic energy of translation only
C. kinetic energy of rotation only
D. kinetic energy of translation and rotation both

Answer: Option D

Explanation:

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47. 

In order to determine the effects of a force, acting on a body, we must know

A. magnitude of the force
B. line of action of the force
C. nature of the force i,e. whether the force is push or pull
D. all of the above

Answer: Option D

Explanation:

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48. 

The negative acceleration is called retardation.

A. True
B. False

Answer: Option A

Explanation:

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49. 

The maximum displacement of a body, from its mean position is called amplitude.

A. Correct
B. Incorrect

Answer: Option A

Explanation:

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50. 

A lifting machine lifts a load of 1000N through a distance of 0.2 m by means of an effort of 200N through a distance of 1m. This machine is an ideal one.

A. Correct
B. Incorrect

Answer: Option A

Explanation:

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