Pulley Advantage


PIRA Classification: 1M20.11

Description: A 30 N weight is lifted with and without pulleys to show the mechanical advantage of pulleys. First, the weight is lifted with a spring scale. The reading is noted. The weight and scale are then connected by a rope, which is over a pulley. The reading is again noted. The weight is then hung from the pulley. The pulley-weight system is then raised using the scale. The small pulley weighs 7 N.

Special Instructions: None

Ideally For: Phys 1101, 1201, 1301, 1401

Condition: OK

Setup time: 3 minutes

Safety Issues: None