Advertisements
Advertisements
Question
What do you mean by uniform circular motion?
Advertisements
Solution
When a particle moves with a constant speed in a circular path, its motion is said to be the uniform circular motion.
APPEARS IN
RELATED QUESTIONS
A boy weighing 40 kgf climbs up a stair of 30 steps each 20 cm high in 4 minutes and a girl weighing 30 kgf does the same in 3 minutes. Compare:
- The work done by them.
- The power developed by them.
State the factors on which moment of force about a point depends.
State the principle of moments.
What do you mean by a centrifugal force?
What is the work done when the force on the object and the displacement of the object are perpendicular to each other?
State the condition when the work done by a force is negative. Explain with the help of examples.
A pump is used to lift 600 kg of water from a depth of 75 m in 10s. Calculate:
- The work done by the pump,
- the power at which the pump works, and
- The power rating of the pump if its efficiency is 40%. (Take g = 10m s-2).
`["Hint" : "Efficiency" = "useful power"/"power input"]`
State two conditions for work to be done.
A coolie carrying a load on his head and moving on a frictionless horizontal platform does no work. Explain the reason why.
For the following scenario, state whether the work done by gravity is positive, negative, or zero.
A person walks on a levelled road.
