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Engineering Mechanics

Engineering Mechanics
If the gravitational acceleration at any place is doubled, then the weight of a body will be

g
2g
g/2
√2.g

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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

None of these
g/2
g/3
g/4

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Engineering Mechanics
If a given force (or a given system of forces) acting on a body __________ the position of the body, but keeps it in equilibrium, then its effect is to produce internal stress in the body.

Does not change
Changes periodically
None of these
Change

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Engineering Mechanics
The rate of change of momentum is directly proportional to the impressed force, and takes place in the same direction in which the force acts. This statement is known as

Newton's third law of motion
None of these
Newton's first law of motion
Newton's second law of motion

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Engineering Mechanics
A force while acting on a body may

Change its motion
Give rise to the internal stresses in it
Balance the forces, already acting on it
All of these

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Engineering Mechanics
The friction experienced by a body, when in motion, is known as

Limiting friction
Static friction
Rolling friction
Dynamic friction

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