Friction
Friction is what happens when two objects rub against each other. When these things rub against each other, speed is reduced as a result. Friction happens when things are pressed together closely which causes intermolecular attractive forces between molecules of different surfaces. There are two types of friction: sliding and static friction.
A dancer experiences friction every time they move across the dance floor. Their shoes and the floor rub against each other and speed is therefore reduced.
A dancer experiences friction every time they move across the dance floor. Their shoes and the floor rub against each other and speed is therefore reduced.
Questions:
A male dancer applies a 34.5 N force to a 4.52-kg female dancer to accelerate her across a stage at 1.28 m/s/s. What is the friction force acting on the dancer?
(ANSWER: 28.7 N)
Does speed decrease or increase when friction is increased?
(ANSWER: Decrease)
A male dancer applies a 34.5 N force to a 4.52-kg female dancer to accelerate her across a stage at 1.28 m/s/s. What is the friction force acting on the dancer?
(ANSWER: 28.7 N)
Does speed decrease or increase when friction is increased?
(ANSWER: Decrease)