Question

Does a single fixed pulley help us to multiply the force? In what way is it useful?

Answer 1

Single Fixed Pulley:

1. The mechanical advantage in terms of effort arm and load arm is,
2. $MA=\frac{Effortarm}{Loadarm}$
3. A single fixed pulley is one that has its axis of rotation fixed in place.
4. A single fixed pulley does not serve to multiply the force because the effort arm is equal to the load arm such that the mechanical advantage is equal to one.
5. It is useful to change the direction of the force applied.
6. Thus, the single fixed pulley is used to change the direction of the force.