Question

A block of mass m is initially held at rest at point P on an incline that makes an angle q with respect to horizontal. The coefficient of kinetic friction between the block and the incline is mk. After the block slides down the incline from point P, it starts to slide without friction up a vertical circular track of radius R. When it reaches the top of the circle, the normal force (downward) by the track to the block equals 50% mg. Find: (a) the speed of the block as it passes the top of the track; (b) the length L of the incline; (c) the net force exerted on the block when it is at point P, a distance R above the bottom of the track.

Answer #1

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radius 0.600 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
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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
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A block of mass 16.31 kg is initially held at rest on a 25.94
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A) Find: mg, FDH, FN, fsmax, and fk and express them rounded to
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C) What is the maximum force up the ramp you can exert before
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1.A small block of mass 3.5 kg starting from rest slides down on
an incline plane of height 2.0 m, 40 degrees with respect to
horizontal (Fig. 2). The coefficient of kinetic friction between
the block and the incline plane is 0.25. At the end of the incline
plane, the block hits the top of a hemispherical mound of ice
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Express your answer...

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(m/s)^2
(b) Find the coefficient of kinetic friction between block and
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(c) Find the friction force acting on the block.
Magnitude N
Direction
(d) Find the speed of the block after it has slid 1.90 m.
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circled A, the bottom of a vertical circular track of radius R =
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at the bottom of the track is...

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