There are two surfaces, A and B that are in contact with each other. Consider the following situations: Situation I: Both A and B are at rest. Situation II: A is moving over B, while B is at rest. Situation III: B is moving over A, while A is at rest. In which of the given situations would you expect the sliding frictional force to come into play?

There are two surfaces, A and B that are in contact with each other. C

1.	There are two surfaces, A and B that are in contact with each other. Consider the following situations: Situation I: Both A and B are at rest. Situation II: A is moving over B, while B is at rest. Situation III: B is moving over A, while A is at rest. In which of the given situations would you expect the sliding frictional force to come into play?
Answer» There are two surfaces, A and B that are in contact with each other. Consider the following situations: Situation I: Both A and B are at rest. Situation II: A is moving over B, while B is at rest. Situation III: B is moving over A, while A is at rest. In which of the given situations would you expect the sliding frictional force to come into play?