Physics · Viscosity
A ball of radius r and density ρ falls freely under gravity through a distance h before entering water. The velocity of the ball does not change even after entering water. If the viscosity of water is η and its density is taken as 1, the value of h is given by:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 129 r4(ρ - 1η)2g
- 2281 r4(ρ - 1η)2g✓
- 3281 r2(ρ - 1η)g
- 429 r2(1 - ρη)g
Correct answer
281 r4(ρ - 1η)2g
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