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NEETPhysicsWork, Power and Energy

A body falls towards Earth in air. Will its total mechanical energy be conserved during the fall?

Options

  1. AYes, because the resistance of air does not affect the body's total mechanical energy.
  2. BNo, because the resistance of air is a non-conservative force leading to a decrease in mechanical energy.
  3. CYes, because the gravitational force will balance out the resistance of air during the fall.
  4. DNo, because the force of gravity will be greater than the resistance of air, leading to a loss in mechanical e

Correct answer

B. No, because the resistance of air is a non-conservative force leading to a decrease in mechanical energy.

Step-by-step solution

Correct Option is : (B) No, because the resistance of air is a non-conservative force leading to a decrease in mechanical energy.

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