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why is the work done on an object moving with uniform circular motion zero ?SSC board 9th standard 9th standard lesson number 2 science 1 why is the work done on an object moving with uniform circular motion Zero 2 marks question |
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Answer» r motion if an object move AROUND a fixed point in circular path then it motion is called circular motion.uniform motion if an object move in a circular path with uniform speed it motion is called uniform circular motion. (i) in circular motion direction of motion change constantly velocity change (due to change in direction); there for the motion along a circular path is accelerated. (ii) the force NEEDED to make an object moving in a circular path is called CENTRIPETAL force.(iii) the acceleration PRESENT in circular motion is called centripetal acceleration. (iv) if an object if an object is moving in a circular path of radius R and it take time T to complete ONE round then the velocity of the object. V=2rr/t |
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