Asked by hana

a person pushes a box across a horizontal surface at a constant speed of .5 meter per second. the box has a mass of 40 kg and the coefficient of sliding friction is .25. The power supplied to the boxx by the person is...

please Explain!!
Answered by GK
Since the box is pulled at a constant speed, the force applied is equal to the force of friction.
F = F(friction) = µ*m*g
Power generated = P = Fv
Answered by hana
is the answer 5K ?
Answered by GK
Your answer should be in watts in the range of 20 to 90 watts. You should be familiar with the symbols I used and the appropriate units for each.
Answered by fawzoyh qhoam
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Answered by Shamanthak Reddy Mallu
Hi
In this question we have to take friction as your force applied.
F = friction = µ*m*g = 0.25 * 40 * 10 = 100
V = 0.5 m/s
Power = F * V = 100 * 0.5 = 50 W