Questions
A uniform disc of mass M and radius R is mounted on an axle supported in frictionless bearings. A light cord is wrapped around the rim of the disc and a steady downward pull T is exerted on the cord. The angular acceleration of the disc is
detailed solution
Correct option is C
Torque exerted on the disc τ = TRNow τ = Iαor α =τi = TR12MR2 = 2TRMR2 = 2TMRTalk to our academic expert!
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Forces are applied on a wheel of radius 20 cm as shown in the figure. The torque produced by the forces 8 N at A, 8 N at E, 6 N at C and 9 N at D at angles indicated is
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