We appreciate your visit to You are attempting to slide your fridge to clean the floor underneath You apply a horizontal pulling force of 215 N but the fridge does. This page offers clear insights and highlights the essential aspects of the topic. Our goal is to provide a helpful and engaging learning experience. Explore the content and find the answers you need!
Answer :
The static friction force acting on the fridge when it does not move with a pulling force of 215 N is equal to 215 N because it counters the pulling force exactly, keeping the fridge stationary. Therefore, the correct answer is b .
When you apply a horizontal pulling force of 215 N to the fridge and it does not move, the static friction force acting on the fridge must have a magnitude equal to 215 N. This is because the forces are in balance and therefore, the static friction force is exactly countering your pulling force, which conforms to Newton's first law of motion. Once the fridge is in motion, the kinetic friction force would be less than the static friction force. This explains why it's easier to keep an object moving at a constant velocity once it has started moving, as the kinetic friction is then less than the static friction.
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