Question

In which of the following situations would the force of friction be greatest?

A) A 50 N box is moving across a wood floor.
B) A 10 N box is moving across a wood floor.
C) A 50 N box sits on a wood floor.
D) A 100 N box sits on a wood floor.

Answer 1

The force of friction is greatest when there is more weight or normal force acting on an object. So, the force of friction would be greatest when a 100 N box sits on a wood floor.

Step-by-step explanation:

The force of friction is greatest when there is more weight or normal force acting on an object. According to Newton's third law of motion, the force of friction is directly proportional to the normal force.

So, in the given situations, the force of friction would be greatest when there is more weight or normal force acting on the box. This means that the force of friction would be greatest when the box is sitting on the floor, so the answer is option D) A 100 N box sits on a wood floor.

For example, if you have a box with a weight of 100 N sitting on the floor, then the force of friction acting on it would also be 100 N. This is because the force of friction is equal to the coefficient of friction multiplied by the normal force, and in this case, the normal force is equal to the weight of the box.