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Grade: 12th pass

                        

A bullet of mass m moving with velocity v strikes a suspended wooden block of masss M. If the block rise to height h, then the initial velocity v of the bullet must have been??

4 years ago

Answers : (1)

Shaswata Biswas
132 Points
							From law of conservation of mechanical energy. At the lower mostt point, KE = 0.5mv^2, PE = 0. At the highest point KE = 0, PE = mgh. These are equal. The we get, 0.5mv^2=mgh => v=root(2gh).
						
4 years ago
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