Question

A small block with mass 0.0475 kg slides in a vertical circle of
radius 0.450 m on the inside of a circular track. During one of the
revolutions of the block, when the block is at the bottom of its
path, point *A* , the magnitude of the normal force exerted
on the block by the track has magnitude 3.75 N . In this same
revolution, when the block reaches the top of its path, point
*B* , the magnitude of the normal force exerted on the block
has magnitude 0.670 N .

How much work was done on the block by friction during the
motion of the block from point *A* to point B?

Answer #1

A small block with mass 0.0350 kg slides in a vertical circle of
radius 0.450 m on the inside of a circular track. During one of the
revolutions of the block, when the block is at the bottom of its
path, point A, the magnitude of the normal force exerted on the
block by the track has magnitude 3.90 N . In this same revolution,
when the block reaches the top of its path, point B, the magnitude
of the...

A small block with mass 0.0475 kg slides in a vertical circle of
radius 0.550 m on the inside of a circular track. During one of the
revolutions of the block, when the block is at the bottom of its
path, point A, the magnitude of the normal force exerted
on the block by the track has magnitude 3.85 N . In this same
revolution, when the block reaches the top of its path, point
B, the magnitude of the...

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