Questions
A uniform sphere of mass 500 g rolls without slipping on a plane horizontal surface with its centre moving at a speed of 5.00 cm/s. Its kinetic energy is :
detailed solution
Correct option is D
K.E of the sphere = Translational K.E + Rotational K.E.⇒KE = 12mv21+K2R2 K= Radius of gyration⇒KE = 12×0.5×510021+25 = 354×10−4J = 8.75×10−4JTalk to our academic expert!
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A homogeneous solid cylindrical roller of radius R and mass M is pulled on a cricket pitch by a horizontal force. Assuming rolling without slipping, angular acceleration of the cylinder is
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