Question

when a student pulls on a rope, the rope pulls on the student with a force of 210 n in the negative direction. what force is the student applying to the rope?
a 105 n in the positive direction
b 105 n in the negative direction
c 210 n in the positive direction
d 210 n in the negative direction

Explanation:

Step1: Apply Newton's third - law

Newton's third law states that for every action, there is an equal and opposite reaction. When the student pulls on the rope, the rope pulls back on the student. The force exerted by the student on the rope and the force exerted by the rope on the student are an action - reaction pair.

Step2: Determine the force magnitude and direction

The rope exerts a force of 210 N on the student in the negative direction. So, the student exerts a force of 210 N on the rope in the positive direction (opposite direction).

Answer:

C. 210 N in the positive direction