Question

If the mass of an object increases, predict what will happen to the coefficient of sliding friction.

1. The coefficient of sliding friction will increase.
2. The coefficient of sliding friction decrease.
3. The coefficient of sliding friction will stay the same.
4. The coefficient of sliding friction will decrease by half.

Answer 1

The coefficient of sliding friction will decrease. When mass increases the acceleration deceases, when acceleration/sliding motion decreases, the friction opposing motion will also decrease.