MHT CET 2024 Physics question
A ball rises to surface at a constant velocity in liquid whose density is 4 times greater than that of the material of the ball. The ratio of the force of friction acting on the rising ball and its weight is
Answer: (A)
Solution
Let the density of the ball be , so the liquid density is and the ball's volume is . Weight . Upthrust (buoyant force) acting upwards. The ball rises at constant velocity, so the net force is zero. The weight and
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