Question

71 what is the difference between a conservative force and a non - conservative force?

• energy is created through a conservative force, and energy is destroyed in a non - conservative force.
• energy loss is not caused by a conservative force, and energy is lost from a non - conservative force.
• energy loss is not caused by a non - conservative force, and energy is lost from a conservative force.
• a conservative force creates mass in a system, and a non - conservative force destroys mass in a system.

Explanation:

Conservative forces (e.g., gravity, spring force) conserve mechanical energy, so no energy is lost from the system as work done depends only on start/end positions. Non-conservative forces (e.g., friction, air resistance) dissipate mechanical energy into other forms (heat, sound), resulting in net energy loss from the system's mechanical energy pool. The other options violate energy/mass conservation laws.

Answer:

Energy loss is not caused by a conservative force, and energy is lost from a non-conservative force.