Question

Factors that contributes to loss of efficiency in a pulley system

Answer 1

Answer:

1. The force of friction between the pulley and the rope.
2. Loss of energy in the form oh heat and light.

Answer 2

Answer:

The amount of friction there is between the rope and the pulley. energy loss that takes the form of heat and light.

Explanation:

• They accumulate a certain amount of potential energy as they ascend, which is equal to their weight times the distance travelled.
• You expend the exact same amount of energy as you gain—equal to your weight (which is four times less) times the distance you travel (four times larger).
• One movable pulley system's efficiency is not perfect. This is due to the fact that I the friction of the pulley bearing is not zero and the pulley and string's combined weight are not zero.
• The pulley experiences a torque from this frictional force, which accelerates it angularly.
• Even for a massless string, friction causes a variation in tension between the ends of the string when it is laid on the pulley.

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