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Engineering Mechanics

Engineering Mechanics
If the number of pulleys in a system is equal to its velocity ratio, then it is a __________ system of pulleys.

None of these
Third
Second
First

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Engineering Mechanics
The unit of moment of inertia of an area is

kg/m2
m4
kg-m2
kg-m-s2

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Engineering Mechanics
One joule is equal to

100 N-m
10 N-m
0.1 N-m
1 N-m

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Engineering Mechanics
A force while acting on a body may

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

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Engineering Mechanics
The angle between two forces when the resultant is maximum and minimum respectively are

90° and 180°
180° and 0°
90° and 0°
0° and 180°

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Engineering Mechanics
The linear acceleration (a) of a body rotating along a circular path of radius (r) with an angular acceleration of α rad/s2, is

a = r / α
None of these
a = α/ r
a = α.r

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