A drum of radius R and mass M rolls down without slipping along an incline plane of angle θ. The frictional force
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a
dissipates energy as heat
b
describes the rotational motion
c
decreases the rotational and translational motion
d
converts translational energy to rotational energy
answer is D.
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Detailed Solution
The net work done by fictional force when drum rolls down without slipping is zero. ThereforeWnet =0or ,Wtrans +Wrot =0or, ΔKtrans +ΔKrot =0ΔKtrans =−ΔKrot Thus, the frictional force converts the translation energy to rotational energy