Hi, regards this type of questions, I saw the solution as

Force = Weight = mass * gravitational acceleration, therefore 14494N in Q15.

The answer is 11660N, 1470N respectively, can someone explain how to solve this question?

Hi, regards this type of questions, I saw the solution as

Force = Weight = mass * gravitational acceleration, therefore 14494N in Q15.

The answer is 11660N, 1470N respectively, can someone explain how to solve this question?

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Hey, you have to calculate the Buoyant force

Fb= ĎgV

density of water is 1kg/dm^3

so, Fb=1 * 9.8 * 340

=3332N

Weight(F)=mg=1530 * 9.8=14994N

Net force= 14994-3332=11662 N

I think 11660 is an approximate value of this.

Correct me if thereâs any mistakesâŚ

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Hey, yes it is generally taken in m^3. But I took the density of water in kg/dm^3 so I didnât change it for Volume. If youâre taking it in m^3 you should change the density of water to kg/m3. Make sure the units match.

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Oh is this because density of water = 1000kg/m3 = 1kg/dm3?

ExactlyâŚ so ,Fb=1000kg/m^3 * 9.8 * 0.34m^3 = 3332N

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Ahh Yeah, Sorry my bad.

Didnât check the density value clearly.

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