Grade 12th passMechanics

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??

Kuldeep Pal

9 Years agoGrade 12th pass

1 Answer

Shaswata Biswas

9 Years ago

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).

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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??

Kuldeep Pal

1 Answer

Shaswata Biswas

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A car loaded with water having total mass 1000 kg moves on a straight horizontal Road starting from rest under the action of a force of 100 Newton. The water spills throw a small hole in the bottom at a rate of 0.1 KG per second the velocity of cart after 300 seconds is nearly.11213141

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