Question

In the figure below, a 4.1 kg block is accelerated from rest by a compressed spring of spring constant 640 N/m. The block leaves the spring at the spring's relaxed length and then travels over a horizontal floor with a coefficient of kinetic friction ?k = 0.25. The frictional force stops the block in distance 7.5 m. No friction D (?k) (a) What is the increase in the thermal kinetic energy of the block floor system? J (b) What was the maximum kinetic energy of the block? J (c) What was the original compression distance of the spring? m

          In the figure below, a 4.1 kg block is accelerated from rest by a compressed spring of spring constant 640 N/m. The block leaves the spring at the spring's relaxed length and then travels over a horizontal floor with a coefficient of kinetic friction ?k = 0.25. The frictional force stops the block in distance 7.5 m.

No friction
D
(?k)

(a) What is the increase in the thermal kinetic energy of the block floor system?
J

(b) What was the maximum kinetic energy of the block?
J

(c) What was the original compression distance of the spring?
m

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In the figure below, a 4.1 kg block is accelerated from rest by a compressed spring of spring constant 640 N/m. The block leaves the spring at the spring's relaxed length and then travels over a horizontal floor with a coefficient of kinetic friction ?k = 0.25. The frictional force stops the block in distance 7.5 m.

No friction
D
(?k)

(a) What is the increase in the thermal kinetic energy of the block floor system?
J

(b) What was the maximum kinetic energy of the block?
J

(c) What was the original compression distance of the spring?
m

Added by Cristian R.

University Physics with Modern Physics

Hugh D. Young 14th Edition

Instant Answer

Solved by Expert Mkhitar Hobosyan

08/07/2023

Step 1

The work done by the frictional force can be calculated using the formula: $W = f_k \cdot d$ where $W$ is the work done, $f_k$ is the kinetic frictional force, and $d$ is the distance traveled. We know that the kinetic frictional force can be calculated using Show more…

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In the figure below, a 4.1 kg block is accelerated from rest by a compressed spring of spring constant 640 N/m. The block leaves the spring at the spring's relaxed length and then travels over a horizontal floor with a coefficient of kinetic friction μk = 0.25. The frictional force stops the block in distance 7.5 m. (a) What is the increase in the thermal kinetic energy of the block floor system? (b) What was the maximum kinetic energy of the block? (c) What was the original compression distance of the spring?

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