Question

How does a pulley help transfer mechanical energy?

a
it spreads the load out over two sides, making the load feel lighter
b
it shifts the load to one side so the load is only heavier on one side instead of both

Answer 1

a
A pulley helps transfer mechanical energy by spreading the load out over two sides. This distribution of the load reduces the amount of force required to lift or move the load, making it feel lighter. By distributing the load over multiple ropes or cables, the pulley system effectively multiplies the force applied, allowing for easier transfer of mechanical energy.