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Engineering Mechanics

Engineering Mechanics
A couple produces

None of these
Combined translatory and rotational motion
Translatory motion
Rotational motion

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Engineering Mechanics
On the ladder resting on the ground and leaning against a smooth vertical wall, the force of friction will be

Zero at its upper end
Upwards at its upper end
Perpendicular to the wall at its upper end
Downwards at its upper end

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Engineering Mechanics
The ratio of limiting friction and normal reaction is known as

Coefficient of friction
Sliding friction
Angle of repose
Angle of friction

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Engineering Mechanics
The time of flight (t) of a projectile on an upward inclined plane is(where u = Velocity of projection, α = Angle of projection, and β = Inclination of the plane with the horizontal.)

t = 2u sin (α - β)/g cos β
t = g cos β/2u sin (α - β)
t = g cos β/2u sin (α + β)
t = 2u sin (α + β)/g cos β

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Engineering Mechanics
When a body falls freely under gravitational force, it possesses __________ weight.

Minimum
Maximum
No
None of these

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Engineering Mechanics
Two balls of equal mass and of perfectly elastic material are lying on the floor. One of the balls with velocity ‘v’ is made to strike the second ball. Both the balls after impact will move with a velocity

v
v/8
v/2
v/4

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