A 2.00-kg piece of wood slides on the surface shown. The curve slides are perfectly smooth but the rough horizontal bottom is 30m long and has a kinetic coefficient of 0.20 with the wood. The piece of wood starts from rest, 4.0m above the rough bottom. Let point 1: the wood is located (above) at the edge of the curve; point.2 : just before the wood slides the rough part of the surface and point.3: when the wood stopped at the rough part of the surface because of friction. a. Calculate total mechanical energies at pt. 1, 2, and 3? (in Joules) b. What is the work done by friction as the wood slide along the rough surface? (in Joules) c. Calculate the distance s (the maximum distance the wood can travel along the rough bottom.
A 2.00-kg piece of wood slides on the surface shown. The
curve slides are perfectly smooth but the rough horizontal
bottom is 30m long and has a kinetic coefficient of 0.20
with the wood. The piece of wood starts from rest, 4.0m
above the rough bottom. Let point 1: the wood is located
(above) at the edge of the curve; point.2 : just before the
wood slides the rough part of the surface and point.3: when
the wood stopped at the rough part of the surface because
of friction.
a. Calculate total mechanical energies at pt. 1, 2, and 3? (in Joules)
b. What is the work done by friction as the wood slide along the rough surface? (in Joules)
c. Calculate the distance s (the maximum distance the wood can travel along the rough bottom.
d. Is the total mechanical energy conserved from point 1 to 3? Why or why not?
e. Is the total energy conserved from point 1 to 3? Explain.
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