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MHT CET Physics question

PhysicsSystems of Particles and Rotational MotionMHT CET

A door 1.6 m wide requires a force of 1 N to be applied at the free end to open or close it. The force that is required at a point 0.4 m distant from the hinges for opening or closing the door is

Answer: (D)

Solution

The torque needed is fixed: , so N; 1.2, 3.6

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Question ID VK-062405