a pulley system is marked with the mechanical advantage of 2.50 worker applies 450 N to the pulley in an attempt to lift a sound system with a 1500 N weight

Answer 1

To find the resistance force, we can use the formula for mechanical advantage:

Mechanical Advantage = Resistance Force / Effort Force

Given that the mechanical advantage is 2.50 and the worker applies an effort force of 450 N, we can rearrange the formula to solve for the resistance force:

2.50 = Resistance Force / 450 N

Cross-multiplying, we get:

Resistance Force = 2.50 * 450 N = 1125 N

Therefore, the resistance force (weight of the sound system) is 1125 N.