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Engineering Mechanics

Engineering Mechanics
The potential energy of a vertically raised body is __________ the kinetic energy of a vertically falling body.

Greater than
None of these
Less than
Equal to

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Engineering Mechanics
If the body falls freely under gravity, then the gravitational acceleration is taken as

+9.8 m/s2
-8.9 m/s2
-9.8 m/s2
+8.9 m/s2

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Engineering Mechanics
The resultant of two equal forces ‘P’ making an angle ‘θ’, is given by

2P sinθ/2
2P tanθ/2
2P cosθ/2
2P cotθ/2

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Engineering Mechanics
The unit of angular acceleration is

m/s
rad/s2
N-m
m/s2

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Engineering Mechanics
The velocity of a body on reaching the ground from a height h, is

√(2gh)
√(gh)
2g.√h
2.√(gh)

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Engineering Mechanics
The force applied on a body of mass 100 kg to produce an acceleration of 5 m/s2, is

500 N
20 N
None of these
100 N

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