Pulleys and belts

Question 1

Why are pulleys used

Answer 1

to lift a load providing a mechanical advantage, they transmit rotary motion and force from the input or drive shaft, for the movement to be transferred it is important the belt doesn’t slip or stretch

Question 2

Fixed pulley definition

Answer 2

using a wheel with a groove in it which the rope sits in, allowing you to change the direction of the force needed - makes lifting easier but the weight will feel the same

Question 3

Block and tackle pulley

Answer 3

using 2 or move pulleys, one fixed and one moveable to help reduce the amount of effort needed to lift the load

Question 4

Belt (pulleys) definition

Answer 4

loop of flexible rubber connects 2 or more pulleys together, transfers power from the pulley to the receiving system