# Stop it if you can.!

A particle of mass 8kg collides with a wedge of inclination 30° and mass 4kg approaching the particle with its inclined surface side with speed 8m/s. What should be the initial speed of particle to stop the wedge?

Assume particle travells horizontally and all surfaces are smooth.

$$g=10m/s^2$$

$$e=0.5$$

This problem is originally part of set Mechanics problems by Abhishek Sharma.

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