Questions
A cylinder of mass M and radius .H is resting on a horizontal platform which is parallel to X-Y plane) with its axis fixed along the Y-axis and free to rotate about its axis. The platform is given a motion in X-direction given by x = A cos . There is no slipping between the cylinder and platform. The maximum torque acting on the cyliner during its motion is
detailed solution
Correct option is A
τ=Iα=12MR2×( acceleration /R)acceleration =−ω2Asinωt or (acc.) max=ω2A∴ (τ)max=12MR2ω2A/R=12MRAω2Talk to our academic expert!
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One end of an ideal spring is connected with a smooth block with the other end with rear wall of driving cabin of a truck as shown in figure. Initially, the system is at rest. If truck starts to accelerate with a constant acceleration ‘a’ , then the block (relative to truck ):
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