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After a short time, the moving sled with the child aboard reached a rough level surface that exerts a constant frictional force of 54 Newtons on the sled. How much work must be done by friction to bring the sled with the child to a stop

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akande212

Answer:

Wf = –750J

Explanation:

The full solution can be found in the attachment below.

This problem involves the concepts of conservation of momentum and energy.

The potential energy of the sled and child combined is constant since thehy are moving in a level surface.

To find the initial velocity of the sled with child we use the principle of momentum conservation to calculate the v1 which is the commovelocity of the child and sled.

Ver imagen akande212
Ver imagen akande212
onyebuchinnaji

The work done by friction in bring the child and the sled to a stop is 324 N.

The given parameters:

  • Frictional friction force, F = 54 N
  • Mass of the child, m = 50 kg
  • Mass of sled, = 10 kg

The work done by friction in bring the child and the sled to a stop is calculated as follows;

W = Fd

W = 54 x 6

W = 324 N

Thus, the work done by friction in bring the child and the sled to a stop is 324 N.

The complete question is below:

A 50.-kilogram child running at 6.0 meters per second jumps onto a stationary 10.-kilogram sled. The sled is on a level frictionless surface.

After a short time, the moving sled with the child aboard reached a rough level surface that exerts a constant frictional force of 54 Newtons on the sled. How much work must be done by friction to bring the sled with the child to a stop

Learn more about work done here: https://brainly.com/question/8119756

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