Question

Q1) A child is dragging a toy car with a rope at an angle of 60°. If the car is displaced horizontally by 5m and the work done is 100J find the force applied
Q2) Show that total mechanical energy of a freely falling body remains conserved (show three positions)
Q3) Calculate the power of an engine required to lift 100 ton of coal per hour from a mine 360m deep. (g=10m/s^2)
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Answer 1

Answer:

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