A boat having length 2m and width 1m is floating in a lake. When a man stands on the boat, it is depressed by 3 cm. The mass of the man is

50kg

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55kg

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60kg

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70kg

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Solution

The correct option is C 60kg
Volume of water displaced $= (2 \times 1 \times 0.03) m^{3} = 0.06 m^{3}$
$∴$ Mass of man = Volume of water $\times$ Density of water displaced
$= (0.06 \times 1000) k g$
$= 60 k g$ .

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