Question

which type(s) of pulley can have a mechanical advantage greater than 2?
a fixed pulley
b moveable pulley
c compound pulley
d two of the above

Explanation:

• Fixed pulley: It changes the direction of the force but has a mechanical advantage (MA) of 1.
• Moveable pulley: It has a MA of 2.
• Compound pulley: It is a combination of fixed and moveable pulleys. By adding more pulleys (more ropes supporting the load), the MA can be increased beyond 2. For example, if there are 3 ropes supporting the load in a compound pulley system, MA = 3.

Answer:

C. compound pulley