Question 92: Work, Energy and Power & Circular Motion

Question

A bag of sand of mass 9.8 kg is suspended by a rope. A bullet of 200 g travelling with speed 10 ms$$-$$1 gets embedded in it, then loss of kinetic energy will be :

Accepted Answer

Loss in $$KE = {1 \over 2} 	imes {{{m_1}{m_2}} \over {{m_1} + {m_2}}} 	imes {v^2}$$
$$ = {1 \over 2} 	imes {{9.8 	imes 0.2} \over {10}} 	imes {(10)^2}$$
$$= 9.8$$ J

Answer

4.9 J

Answer

9.8 J

Answer

14.7 J

Answer

19.6 J

Work, Energy and Power & Circular Motion

A bag of sand of mass 9.8 kg is suspended by a rope. A bullet of 200 g travelling with speed 10 ms$-$1 gets embedded in it, then loss of kinetic energy will be :

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