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Applied Mechanics and Graphic Statics

Applied Mechanics and Graphic Statics
A hoop of radius 3 m weighs 100 kg. It rolls along a horizontal floor so that at its centre of mass has a speed of 200 mm/sec. The work required to stop the hoop is

2 J
6 J
4 J
8 J

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Applied Mechanics and Graphic Statics
If two forces P and Q (P > Q) act on the same straight line but in opposite direction, their resultant, is

P/Q
Q/P
P + Q
P - Q

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Applied Mechanics and Graphic Statics
If ‘α’ is the angular acceleration of a compound pendulum whose angular displacement is ‘θ’, the frequency of the motion is

(1/2π) √(α/θ)
2π √(α - θ)
2π √(α/θ)
4π √(α/θ)

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Applied Mechanics and Graphic Statics
A circular disc rotates at n rpm. The angular velocity of a circular ring of same mass and radius as the disc and to have the same angular momentum is

n rpm
2n rpm
n/4 rpm
n/2 rpm

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Applied Mechanics and Graphic Statics
If the linear velocity of a point on the rim of a wheel of 10 m diameter, is 50 m/sec, its angular velocity will be

20 rad/sec
5 rad/sec
10 rad/sec
20 rad/sec

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Applied Mechanics and Graphic Statics
Minimum pull in a suspended cable with supports at two ends is equal to

Resultant of horizontal thrust and support reaction
Support reactions
Horizontal thrust
Half the weight of the cable

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