Question

4. You are pushing a 100 kg block across a flat wood floor with a coefficient of friction of

0.25. You can push the block with a force of 300 N.
a) Draw the free body diagram for the scenario below.

Answer 1

The free body diagram for this scenario is shown below. The force of 300 N is the applied force, pushing the block across the floor. The force of friction is opposing the applied force, and is equal to the coefficient of friction (0.25) multiplied by the weight of the block (100 kg). This gives a force of friction of 25 N.

b) Calculate the acceleration of the block

The acceleration of the block can be calculated using Newton's Second