Advertisements
Advertisements
प्रश्न
State whether thrust is a scalar or vector?
Advertisements
उत्तर
Thrust is a vector quantity.
APPEARS IN
संबंधित प्रश्न
What is the scientific name of the 'upward force' acting on an object immersed in a liquid?
An object of weight 200 N is floating in a liquid. What is the magnitude of buoyant force acting on it ?
A body floats in a liquid when its weight becomes equal to the weight of the liquid displaced by its submerged part.
If a fresh egg is put into a beaker filled with water, it sinks. On dissolving a lot of salt in the water, the egg begins to rise and then floats. Why ?
Describe an experiment to determine the density of the material of a coin.
Which of the following will sink or float on water? (Density of water = 1 g Cm-3)
(a) body A having density of 500 kg m-3
What is meant by pressure? State its S.I. unit.
How does the pressure exerted by thrust depend on the area of surface on which it acts? Explain with a suitable example.
A metal solid cylinder tied to a thread is hanging from the hook of a spring balance. The cylinder is gradually immersed into the water contained in a jar. What changes do you expect in the readings of the spring balance? Explain your answer.
The mass of a block made of certain material is 13.5 kg and its volume is 15 × 10-3 m3.
(a) Calculate upthrust on the block if it is held fully immersed in water.
(b) Will the block float or sink in water when released? Give a reason for your answer.
(c) What will be the upthrust on block while floating?
Take density of water = 1000 kg m-3.
