Question

the 20kg block starts from rest at point a, slides down the plane through the pool....

the 20kg block starts from rest at point a, slides down the plane through the pool. the friction forces acting to the block are 20N on the plane and 60N on the water. find the speed of the block when it travels 20M on the water

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Answer #1

The figure is shown below,

Here the intial velocity u is zero. and suppose the body is moving velocity a.

Draw the free body diagram of the part BC.

Thus, the speed of the block when it travels 20M on the water is 20.97 m/sec.

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