A child is sitting in a chair connected to a rope that passes over a frictionless pulley. The child pulls on the loose end of the rope with a force of 250 N. The child's weight is 320 N and the c

Question

A child is sitting in a chair connected to a rope that passes over a frictionless pulley. The child pulls on the loose end of the rope with a force of 250 N. The child's weight is 320 N and the chair weighs 160 N. The child is accelerating. Find the force that the seat of the chair exerts on the child.

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Answer:

A

Solution:

$mg = kx - kx = 0 x = \frac{mg}{2 k} d = \frac{l}{2} + x$

TestHub · Accepted Answer

mg = kx − kx = ​ 0 x = ​ 2 k mg ​ d = ​ 2 l ​ + x ​

Physics - NLM Question with Solution | TestHub

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