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A weightless balloon contains 200 g of water. Its weight in water will be
When a body floats in a liquid, its apparent weight is always
Apparent weight is lessened by buoyancy, which occurs when an object is immersed in a fluid (a liquid or a gas). For example, an object immersed in water weighs less, according to a spring balance, than the same object in air. The apparent weight of a floating object is zero.
A mass weighing W can float if the upthrust U is related as
If the weight of water is greater than the upward buoyant force acting on it, then net force W−U acts downwards. Hence the body displaces downwards, that is, sink.
The relative density of a solid is 0.6. It floats in water with
The least value of apparent weight of a body in a fluid is
The pressure exerted by man on earth is minimum when he
An empty closed drum and a filled drum of same dimension will bring
Correct Answer :- c
Explanation : An empty closed drum and a filled drum of same dimension will bring same upthrust and same volume
The relation between force F, pressure P and area A is
A girl stands on a box having 60 cm length, 40 cm breadth and 20 cm width in three ways.In which of the following cases, pressure exerted by the brick will be