Mechanics Help?

Mechanics Help?



1. A block of mass 6 kg rests on an inclined rough plane (friction coefficient ) that is inclined at 30° to the horizontal. It is connected by a light inextensible string that passes over a smooth fixed pulley at the top of the plane to a particle of mass 8 kg that is hanging freely at a height of 15 m above the ground. When the system is released the particle of mass 8kg is moving downward at a speed of 5m/s. 
-Find the acceleration of the system.





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