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24-11-2021
Physics

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A 155 kg cart is pulled up a frictionless inclined plane that makes an angle of 25 degrees with the horizontal. The inclined plane is 8.0 m long. How much work must be done if the cart is to be pulled up the plane without accelerating? (5.1 kJ)

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24-11-2021

Answer:

The work applied will change the potential energy

W = PE = mgh = 155(9.8)(8.0sin25) = 5,135.657... ≈ 5100 J

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