Description
Hang a 10-newton weight on a string passing over a pulley and measure the force with a spring scale. Then, hang the weight from a free-running pulley and note how the force reading on the scale changes. This setup demonstrates how pulleys can reduce the effort needed to lift a weight by distributing the force over a greater distance.
Aliases
Two Ropes or One
PIRA DCS Number
1M20.15
Preparation & Instructions
Setup includes preparing a video camera to show the scale readings.