Question Detail
Question
What is the frictional force overcome by a force of 200 N pulling on a block of mass 50 kg with an acceleration of 3.0 m/s²?
Correct Answer
Option A is the correct answer.
Detailed Explanation
Using Newton's second law: F_net = ma = 50 kg × 3.0 m/s² = 150 N. The applied force is 200 N, but part of it overcomes friction. So F_applied - F_friction = F_net. Therefore, F_friction = F_applied - F_net = 200 N - 150 N = 50 N.
Hint
Apply Newton's second law: net force = mass × acceleration. The net force is applied force minus frictional force.