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A mass m connected to inextensible string of length l lie on a horizontal smooth ground. Other end of string is fixed. Mass m is imparted a velocity v such that string remains taut & motion occurs in horizontal plane. What is impulse provided by string during the time string turns through 90°.

A mass m connected to inextensible string of length l lie on a horizontal smooth ground. Other end of string is fixed. Mass m is imparted a velocity v such that string remains taut & motion occurs in horizontal plane. What is impulse provided by string during the time string turns through 90°.

Grade:12th pass

1 Answers

Mugdha Raut
13 Points
4 years ago
Net impulse=mvî+mvj
Therefore by law of vector addition
                       =√(mv)²+(mv)²+2mvcos90°
                        =√(mv)²+(mv)²+0
                        =(√2)mv

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