Advertisements
Advertisements
Question
An object of weight 200 N is floating in a liquid. What is the magnitude of buoyant force acting on it ?
Advertisements
Solution
According to Archimedes’ principle, buoyant force equals the weight of the liquid displaced by the object. Therefore, the buoyant force on the object would be 200 N.
APPEARS IN
RELATED QUESTIONS
The density of water is 1.0 g Cm-3. The density of iron is 7.8 × 10″3 g Cm-3. The density of mercury is 13.6 g Cm-3.
Ans the following:
Will a piece of iron float or sink in water?
A plastic cube is released into the water. Will it sink or come to the surface of the water?
State whether pressure is a scalar or vector?
Write an expression for the pressure at a point inside a liquid. Explain the meaning of the symbols used.
Pressure at the free surface of a water lake is P1, while at a point at depth h below its free surface is P2. (a) How are P1 and P2 related? (b)Which is more P1 or P2?
Complete the following sentence :
Pressure is .................... in all directions about a point in a liquid.
A hammer exerts a force of 1.5 N on each of the two nails A and B. The area of cross section of tip of nail A is 2 mm2 while that of nail B is 6 mm2. Calculate pressure on each nail in pascal.
A vessel contains water up to a height of 1.5 m. Taking the density of water 103 kg m-3, acceleration due to gravity 9.8 m s-2 and area of base of vessel 100 cm2, calculate: (a) the pressure and (b) the thrust at the base of vessel.
A body 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 body in equilibrium, and state the direction in which each force acts.
If the buoyant force is less, the object will float.
