Question

A spool is placed on table top. The static friction coefficient between the table top and the spool is high.

Part (a) If the string is pulled out over the bottom of the axle as shown, in which direction will the spool roll?
MultipleChoice :

1) In the same direction as the applied force.
2) It depends on how much force is applied.
3) It will stay in one place and spin.
4) In the opposite direction of the applied force.

Answer 1

Is this 2)?

Answer 2

if you pull on the spool, the spool wants to spin in one place, but friction resists this spinning.

Answer 3

if you imagine that the spool is on a frictionless surface, like ice, and you push real hard on the string, the spool will spin in one place. but friction normally will prevent this

Answer 4

Thinking about angular motion, clockwise is negative, and counter-clockwise is positive. By looking at how the spool spins it will be negative. So this will be 4) In the opposite direction of the applied force.

Answer 5

correct,it will move in the opposite direction