A boat having a length 3 m and breadth 2 m is floating on a lake. The boat sinks by 1 cm when a man gets on it. The mass of man is (a) 12 kg       (b) 60 kg        (c) 72 kg          (d) 96 kg

A boat having a length of 3 m and breadth of 2 m is floating on a lake. The boat sinks by 1 cm when a man gets on it. The mass of the mas is:

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

A boat having a length of 5m and breadth 1m is floating on a lake.If a man gets on to the boat,the boat sinks by 1cm.The weight of the man is (Take g=10ms^(-2))

A boat having a length 4m and breadth 2.5 m is floating on lake. The boat sinks by 2 cm when a load is loaded on it. What is the weight of the load ? Use g =10 ms^(-2), density of water = 10^3 kg m^(-3)

A boat floating in a lake sinks by 2 cm when a man of mass m gets into it. What will be the mass of man if length and breadth of the boat are 1 m and 2 m?

A man of mass m=2kg is standing on a platform of mass M=5kg , then at any instant.

The average weight of 3 men A , B and C is 84 kg. Another man D joins the group and the average now becomes 80 kg. If another man E , whose weight is 3 kg more than that of D , replaces A , then the average weight of B , C , D and E becomes 79 kg. The weight of A is (a) 70 kg (b) 72 kg (c) 75 kg (d) 80 kg

The average weight of 8 men is increased by 1.5 kg when one of the men,who weighs 65 kg is replaced by a new man.The weight of the new man is (a) 70kg (b) 74kg (c) 76kg (d) 77kg