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Engineering Mechanics

Engineering Mechanics
The moment of inertia of a solid cone of mass ‘m’ and base radius ‘r’ about its vertical axis is

3mr²/5
4mr²/5
3mr²/10
2mr²/5

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Engineering Mechanics
The velocity ratio for the first system of pulleys is (where n is the number of pulleys.)

2n - 1
2n
n²
n

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Engineering Mechanics
A particle moves along a straight line such that distance (x) traversed in 't' seconds is given by x = t² (t - 4), the acceleration of the particle will be given by the equation

6f - 8
3t² + 2t
6f - 4
6t² - 8t

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Engineering Mechanics
The velocity ratio of a first system of pulleys with 4 pulleys is

4
16
20
8

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Engineering Mechanics
A body of mass ‘m’ moving with a constant velocity ‘v’ strikes another body of same mass moving with same velocity but in opposite direction. The common velocity of both the bodies after collision is

8v
4v
2v
v

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Engineering Mechanics
If two bodies having masses m1 and m2 (m1>m2) have equal kinetic energies, the momentum of body having mass m1 is _________ the momentum of body having mass m2.

Greater than
Less than
Equal to
None of these

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