A stone tied to a string is rotated in a circle. If the string is cut, the stone flies away from the circle because
A centrifugal force acts on the stone
Of its inertia
A centripetal force acts on the stone
Reaction of the centripetal force
A car when passes through a convex bridge exerts a force on it which is equal to
The maximum tension which an inextensible ring of mass $0.1\, kg/m$ can bear is $10\,N$. The maximum velocity in $m/s$ with which it can be rotated is ........ $m/s.$
A car has to move on a level turn of radius $450\,m.$ If the coefficient of static friction between tyre and the road is $\mu = 0.2.$ Find the maximum speed the car can take without skidding is given by ........ $m/s$
Assuming the coefficient of friction between the road and tyres of a car to be $0.5$, the maximum speed with which the car can move round a curve of $40.0\, m$ radius without slipping, if the road is unbanked, should be ......... $m/s$
Write the formula for the maximum permissible speed of a vehicle moving on smooth circular balanced tracks.