what downward force is required to keep a ball of weight 1.30 n and radius 4...

Question

Question

what downward force is required to keep a ball of weight 1.30 n and radius 4 cm submerged in water?

Answer 1

Answer #1

here,

the weight of ball , W = 1.3 N

the radius of ball , r = 4 cm = 0.04 m

equating the forces vertically

the downward force required , F = buoyant force - weight

F = density of water * volume * g - W

F = 1000 * (4/3) * pi * 0.04^3 * 9.81 - 1.3 N

F = 1.33 N

the downward force required is 1.33 N

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Answer 2

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