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Engineering Mechanics

Engineering Mechanics
The center of percussion of a solid cylinder of radius ‘r’ resting on a horizontal plane will be

r/A
2r/3
r/2
3r/2

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Engineering Mechanics
One kg force is equal to

12 N
8.9 N
9.8 N
7.8 N

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Engineering Mechanics
The center of gravity of a semi-circle lies at a distance of __________ from its base measured along the vertical radius.

3r/4π
4r/ 3π
8r/3
3r/ 8

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Engineering Mechanics
The center of gravity of a quadrant of a circle lies along its central radius (r) at a distance of

0.6 r
0.5 r
0.8 r
0.7 r

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Engineering Mechanics
The angular velocity (in rad/s) of a body rotating at N revolutions per minute is

πN/60
2πN/60
2πN/180
πN/180

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Engineering Mechanics
Which of the following is an equation of linear motion?(where, u and v = Initial and final velocity of the body, a = Acceleration of the body, and s = Displacement of the body in time t seconds.)

v2 = u2 + 2a.s
All of these
v = u + a.t
s = u.t + ½ a.t2

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