A block starts moving up an inclined plane of inclination with an initial velocity of . It comes back to its initial position with velocity The value of the coefficient of kinetic friction between the block and the inclined plane is close to The nearest integer to is _______.
Option: 1 346
Option: 2 12345
Option: 3 7689
Option: 4 12341
Let the length of the inclined plane as S (as shown in the figure)
For upward motion
So
For downward motion
From equation (1) and (2)
we get
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