Question

A block with a mass m = 2.12 kg is pushed into an ideal spring whose spring constant is k = 3810 N/m. The spring is compressed x = 0.069 m and released. After losing contact with the spring, the block slides a distance of d = 2.07 m across the floor before coming to rest.

a) Write an expression for the coefficient of kinetic friction between the block and the floor using the symbols given in the problem statement and g (the acceleration due to gravity).

b)What is the numerical value of the coefficient of kinetic friction between the block and the floor?

Answer #1

A 2.90 kg block on a horizontal floor is attached to a
horizontal spring that is initially compressed 0.0340 m . The
spring has force constant 850 N/m . The coefficient of kinetic
friction between the floor and the block is 0.42 . The block and
spring are released from rest and the block slides along the
floor.
Part A
What is the speed of the block when it has moved a distance of
0.0190 m from its initial position?...

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rough patch a distance d = 2 m long. For this rough path, the
coefficient of friction is μk = 0.48.
1)How much work is done by the spring as it accelerates the...

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The kinetic friction coefficient between the box and the floor is
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contact with the spring.

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