John wants to lift 800 N box from the ground to keep it into a trolley. He fixes one end of a long beam at the weight and applies his whole weight 490 Non the other end after keeping a proper support to the beam to act. What is the mechanical advantage of the lever in this case?
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Step-by-step explanation:
1. To reduce force because torque is proportional to distance and once distance has decreased then torque will reduce. 2. A lever amplifies a small force to a large force.
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