Questions
A wedge shaped block 'A' of mass M is at rest on a smooth horizontal surface. A small block 'B' of mass 'm' placed at the top edge of inclined plane of length 'L' as shown in the figure. By the time, the block 'B' reaches the bottom end, the wedge A moves a distance of
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Correct option is B
Since net horizontal force on the system is zero, its horizontal momentum must remain conserved. If V be the velocity of wedge relative to ground and u be the velocity of block relative to the wedge, we can write,MV + m(V - ucosθ) = M x 0 + m x 0 (where x = Displacement of wedge and l= displacement of block with respect to wedge)Similar Questions
If fig four identical spheres of equal mass m are
suspended by wires of equal length /, so that all spheres are almost touching to each other. If the sphere 1 is released from the horizontal position and
all collisions are elastic, the velocity of sphere 4 iust after collision is
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