Figure (9-E11) shows a small block of mass m which is started with a speed v on the horizontal part of the bigger block of mass M placed on a horizontal floor. The curved part of the surface shown is semicircular. All the surfaces are frictionless. Find the speed of the bigger block when the smaller block reaches the point A of the surface.

Let the speed of the bigger block be V.
Applying conservation of momentum ⇒ mv + M×0 = (m+M)V

∴ Speed of the bigger block = mv/(m+M)

Question

Let the speed of the bigger block be V.

Applying conservation of momentum ⇒ mv + M×0 = (m+M)V

∴ Speed of the bigger block = mv/(m+M)

Philoid · Accepted Answer

Let the speed of the bigger block be V.

Applying conservation of momentum ⇒ mv + M×0 = (m+M)V

∴ Speed of the bigger block = mv/(m+M)