1. A student holding a force sensor with a string attached sits in a chair that

Question

1. A student holding a force sensor with a string attached sits in a chair that has wheels with negligible friction. Describe how their partner must move such that the force sensor reads a constant force as the student is pulled across the lab room.

2. A dynamics cart with a force sense attached is placed on a level track. Attached to the force sensor is a string of negligible mass that passes over a pulley. Ignore any friction on the axles of the cart and pulley. Describe what happens to the acceleration of the hanging mass after the string is cut. If you can, quantify the acceleration of the hanging mass just after the string is cut.

Explanation / Answer

(a) force= massx acceleration

for the force to be constant, the acceleration must be kept constant.

so for  a constant force reading greater than 0, the partner must move the chair at a constant acceleration

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