1.

A sphere of mass m, moving with velocity V, enters a hanging bag of sand and stops. If the mass of the bag is M and it is raised by height h, then the velocity of the sphere was                                                              [MP PET 1997]

A. \[\frac{M+m}{m}\sqrt{2gh}\]
B. \[\frac{M}{m}\sqrt{2gh}\]
C. \[\frac{m}{M+m}\sqrt{2gh}\]
D. \[\frac{m}{M}\sqrt{2gh}\]
Answer» B. \[\frac{M}{m}\sqrt{2gh}\]


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