Question

1) A block is released from point A and it slides down an incline (theta = 30 degrees) where the coefficient of kinetic friction is 0.3. It goes 5m and hits a spring with a spring constant k = 500 N/m. While it is being acted upon by the spring, assume it is on a frictionless surface.

a) How far is the spring compressed?

b) How far does the block go up the plane on the rebound from the spring?

2) A block of mass 2kg is held at the top of an incline plane that makes an angle of 37 degrees with the horizontal. It is initially positioned 1m from a spring at the end of the incline, and spring has a spring constant of 120 N/m. The coefficient of kinetic friction between the surface and the block is 1/8. As the block makes contact with the spring, it continues to move until it compresses the spring to a maximum distance x. Find x. (Answer: 0.5m).

Answer #1

1.

Mass of block A is not given in question.I assumed it M=2Kg and solved the question.

A 2kg block is released from the top of a 37º incline at a
distance of 0.4 m from a light, unstretched spring. At the end of
its slide, the block compresses the spring by 0.1m. If the
coefficient of kinetic friction between the incline is 0.2
determine the spring constant.
The answer is 880N/m how does one find this answer thanks for
your help.

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Name:__________________________________________Section____
A block of mass ? = 12.0 kg is released from rest on an incline
angled at θ = 30 degrees. The block slides down and incline of
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The block then slides on a horizontal frictionless surface until it
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Magnitude N
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