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JEE Main Physics question

PhysicsLaws of MotionJEE Main

A 10 kg stone is suspended with a rope of breaking strength 30 kg wt. The minimum time in which the stone can be raised through a height of 10 m, starting from rest, is (taking g = 10 ms⁻²)

Answer: (B)

Solution

Maximum tension = 30 kg wt = 300 N. Maximum net upward force = 300 − (10×10) = 200 N, so maximum a =

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Question ID VK-153163