Question

Long Answer Type Questions : 16. (i) What is centripetal force? Write any two applications of centripetal force. (ii) A ball is thrown vertically upward with an initial velocity of 50 m/s. Calculate (a) Maximum height achieved by ball. (b) Time for which ball remains in air before coming to ground.​

Answer 1

Answer:

1)When a car goes round a level curve, the force of friction between the tyres and the road provides the necessary centripetal force. If the frictional force, which acts as centripetal force and keeps the body moving along the circular road is not enough to provide the necessary centripetal force, the car will skid.

Answer 2

centrally directed acceleration, called centripetal acceleration, is given by the formula:-

 

$a_{c} = \frac{ {v}^{2} }{r}$