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Recent questions tagged telegram-61071

(chatquestion)...Lower surface of a plank is rough and lying at rest on a rough horizontal surface. Upper surface of the plank is smooth and has a smooth hemisphere placed over it through a light string as shown in the figure. After the string is burnt, trajectory of C.M. of the sphere 40. is (A) a circle (C) a straight line (B) a ellipse (D) a parabola Plank A system consists three paticles cach

asked Mar 27, 2020 by balaji.thirumalai

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