Laws Of Motion ...

A stone of mass 5 kg is attached to a string of 10 m length and is whirled in a horizontal circle. The string can withstand a maximum tension of 160 N. The maximum velocity of revolution that can be given to the stone without breaking the string is

The acceleration of the particle performing uniform circular motion is

It is advised to drive along the slippery road slowly, because:

Centripetal force always acts at 90 degrees to the velocity, and away from the centre of the circle.

Railway tracks are banked at the curves so that the necessary centripetal force may be obtained from the horizontal component of the reaction on the train.

Which of the following is called a fictitious force?

At which place of the earth, the centripetal force is maximum

The maximum speed at which a car can turn round a curve of 400 m radius on a level road is: (Given: coefficient of friction between the tyres and road is 0.1, and g = 10 m/s²)

The angle through which the outer edge is raised above the inner edge is called

A model aeroplane is tethered to a post and held by a fine line. It flies in a horizontal circle. Then the line breaks. What direction will it fly in?