Pulleys and Gears

Pulleys

input OUTPUT

Crossed belt will turn it in opposite directions

A single pulley

A single pulley is used to reverse the direction of the effort

Gears

Gear train

Idler gear

• the idler gear change the direction of rotation

Idler gear

Gears in can opener

Gears in bikes

Special gears are used to

•1- change the angle of motion•2-change the type of motion

1- change the angle of motion

Bevel gears

Hand drill

Worm and worm-wheel

Gears in guitar tuner

2-Change the type of motion

Rack and pinion

Thank you