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bobbob
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A block of mass M is being puled up an inclined plane at a constant speed, by an attached rope that exerts a tension T. The block is pulled a distance L. The plane makes an angle theta with the horizontal, and the coefficient of kinetic friction between the block and the incline is uk.
a) Let E=PE + KE of the block. What is the change in the mechanical energy E of the block? What is the change in the potential energy of the block?
b) Verify that deltaE = Wnoncons, the change in the mechanical energy of the block is equal to the work done by the non-conservative forces acting on the block.
c) what is the Wgrav, the work done by gravity on the block? Check that Wgrav = -delta PE.
d) Combining your results find the total work done on the block, Wtot = Wcons + Wnoncons.
Verify that Wtot = delta KE
any help would be much appreciated..not sure how to do this part. thanks
a) Let E=PE + KE of the block. What is the change in the mechanical energy E of the block? What is the change in the potential energy of the block?
b) Verify that deltaE = Wnoncons, the change in the mechanical energy of the block is equal to the work done by the non-conservative forces acting on the block.
c) what is the Wgrav, the work done by gravity on the block? Check that Wgrav = -delta PE.
d) Combining your results find the total work done on the block, Wtot = Wcons + Wnoncons.
Verify that Wtot = delta KE
any help would be much appreciated..not sure how to do this part. thanks