Understanding Non-Conservative Forces

What is a key characteristic of conservative forces?

• They conserve mechanical energy.

• They transform mechanical energy into thermal energy.

• They always increase mechanical energy.

• They depend on the path taken.

Which of the following is a common example of a non-conservative force?

• Magnetic force

• Friction

• Spring force

• Gravity

How does air resistance affect a falling object?

• It decreases the object's mass.

• It transforms kinetic energy into thermal energy.

• It increases the object's potential energy.

• It has no effect on the object's energy.

What role do motors play in a system with non-conservative forces?

• They always decrease mechanical energy.

• They convert thermal energy into potential energy.

• They have no effect on the system's energy.

• They can increase mechanical energy by using external energy.

What is the main concept regarding non-conservative forces and mechanical energy?

• The presence of non-conservative forces means mechanical energy is not conserved.

• Non-conservative forces always conserve mechanical energy.

• Non-conservative forces have no impact on energy conservation.

• Mechanical energy is conserved only if non-conservative forces are present.