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<div> <p class="MsoNormal"><span style="font-size: 18.0pt; line-height: 115%;">A body of mass 120 kg and density 600kg/m<sup>3</sup> floats in water. The additional mass to be added to the body so that the body does not sink is:</span></p> <p class="MsoNormal"><span style="font-size: 18.0pt; line-height: 115%;">(a)20 kg&nbsp;&nbsp; (b) 80 kg&nbsp;&nbsp;&nbsp; (c)100kg&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (d)120 kg</span></p> </div>
Asked by rkjha_in | 24 Mar, 2015, 06:10: PM
Correct option (a) 20 kg
Let 'm' be the maximum mass that can to be added to the body such that the body does not sink:
We know that:
Weight of the water displaced = Weight of body + Maximum mass that can be added
So, if 80 kg mass or above this is added to the body, it will sink. Hence on adding 20 kg mass the body will float.
Answered by Yashvanti Jain | 13 Dec, 2017, 06:30: PM

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