Applying a small force F→ to the block, as in parts a and b, produces no movement, because the static frictional force f→s exactly balances the applied force. (c) The block just begins to move when the applied force is slightly greater than the maximum static frictional force f→sMAX.

Figure 4.20

Applying a small force

to the block, as in parts a and b, produces no movement, because the static frictional force

exactly balances the applied force. (c) The block just begins to move when the applied force is slightly greater than the maximum static frictional force