A bucket full of water is on the first floor of your house and another identical bucket with same quantity of water is kept on the second floor. Which of the two has greater potential energy ?

Two bodies A and B of masses 10 kg and 20 kg respectively are at the same height above the ground. Which of the two has greater potential energy?

Two toy-cars A and B of masses 500 g and 200 g respectively are moving with the same speed. Which of the two has greater kinetic energy?

One coolie takes 1min to raise a box through a height of 2m . Another one takes 30s for the same job and does the same amount of work. Which one of the two has greater power and which one uses greater enegy?

A can is (1)/(4)th full of water. When this water is poured into another can, the other can is (3)/(5)th full of water. Find the ratio of the capacity of the first can to that of the second.

A shpere of iron and another of wood, both of same radius are placed on the surface of water. State which of the two will sink? Give reason to your answer.

A man wants to draw a bucket full of water in two different ways. As shown in figure 'a' he draws the bucket directly and as shown in figure (b) he uses a pulley. The weight of the man is 50kg and the bucket with full water weighs 25kg. Find the action on the floor by the man in the two cases. (Take g=10ms^(-2) ).

500 litre of water is raised from the floor of a house at height 4 m to its third floor a height 12 m.State whether the potential energy of water will decrease or increase. Find the decrease/increase in potential energy of water.Take ,g=10 Ng^(-1) ,density of water =1kg "litre"^(-1)

Two idential solid balls, one of ivory and the other of wet caly, are dropped from the same height on the floor. Which one will rise to a greater height after striking the floor and why ?

Two idential solid balls, one of ivory and the other of wet caly, are dropped from the same height on the floor. Which one will rise to a greater height after striking the floor and why ?

A bucket full of water weighs 5 kg, it is pulled from a well 20 m deep. There is a small hole in the bucket through which water leaks at a constant rate. If it is observed that for every meter the bucket loses 0.2 kg mass of water, then the total work done in pulling the bucket up from the well is [g = 10ms^(-2) ]