The moment of inertia of a thin ring about an axis perpendicular to plane of ring is
A.Mr
B.Mr2
C.Mr3
D.1/2 Mr3
E.1/3 Mr3
Category: Applied Mechanics Mcqs
A single purchase crab has a handle 45 cm long and a drum of 25 cm diameter. The pinion has 30 teeth and spur has 150 teeth. The efficiency of the machine is 75%. If the maximum force that can be applied is 500 newtons, the maximum load that can be lifted will be
A.1250 N
B.6750 N
C.9860 N
D.13500 N
E.20250 N
In a torsion pendulum
A.The body attached to the lower end of wire or rod must be elastic
B.The clamp must be elastic
C.The clamp must be elastic
D.(A) and (B) above
E.(A), (B) and (C) together
