Physics
A buoy is held inside water contained in a vessel by tying it with a thread to the base of the vessel. Name the three forces that keep the buoy in equilibrium and state the direction in which each force acts.
Related Questions
Two identical pieces, one of ice (density = 900 kg m-3) and other of wood (density = 300 kg m-3) float on water.
(a) Which of the two will have more volume submerged inside water?
(b) Which of the two will experience more upthrust due to water?
A piece of ice floating in a glass of water melts, but the level of water in glass does not change. Give reason.
[Hint: Ice contracts on melting]
A solid iron ball of mass 500 g is dropped in mercury contained in a beaker. (a) Will the ball float or sink? Give reason. (b) What will be the apparent weight of ball? Give reason.
Explain why an iron nail floats on mercury, but it sinks in water.
[Hint: Density of iron is less than that of mercury, but more than that of water]