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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > End A of the bar AB in figure rests on a frictionless horizontal surface and end B is hinged A horizontal force F ​ of magnitude 120 N is exerted on end A. you can ignore the weight of the bar. What is the net force exerted by the bar on the hinge at B?

End A of the bar AB in figure rests on a frictionless horizontal surface and end B is hinged A horizontal force F ​ of magnitude 120 N is exerted on end A. you can ignore the weight of the bar. What is the net force exerted by the bar on the hinge at B?

A rod of length L is held vertically on a smooth horizontal surface. The top end of the rod is given a gentle push. At at certain instant of time when the rod makes an angle 37∘ with horizontal the velocity of COM of the rod of 2 m/s. The velocity of the end of the rod in contact with the surface at that instant is