Frictional Resistance between Block and Pulley is the opposition to motion between a block and pulley system, measured using a dynamometer. And is denoted by F. Frictional Resistance between Block and Pulley is usually measured using the Newton for Force. Note that the value of Frictional Resistance between Block and Pulley is always negative. Typically, the value of Frictional Resistance between Block and Pulley is greater than 0.