A sailboat is moving due to wind energy. State the work done by wind on the sail.
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Food grains are getting dried in the sun: - No work is done in this case as food grains remain at rest. A sailboat is moving due to wind energy: - The force exerted by the wind on the sail move the boat in the direction of force, hence, positive work is done by wind energy.
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When a sailboat is moving due to wind energy, force is applied by the boat in the forward direction. And it is moving in the forward direction. Since displacement and force are in the same direction, Hence, work is done.
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