A block of mass m sliding down an incli...

A block of mass `m` sliding down an inclined at constant speed is initial at a height `h` shown the ground as shown in the figure above . The coefficient of kinetic friction between the mass and the inclined is `mu` . If the mass constinues to slide down the inclined at a constant speed how much energy is displaced by friction by the time the mass reaches the bottom of the incline?

`mgh// theta`

`mgh`

`mu mgh//sin theta`

` mgh sin theta`

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Verified by Experts

The correct Answer is:

Taking block as system
`W_(f) = Delta K + Delta U = 0- mgh`

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