If the radius of curvature of the path of two particles of same mass are in the ratio $3:4,$ then in order to have constant centripetal force, their velocities will be in the ratio of:
$\sqrt{3}: 2$
$1: \sqrt{3}$
$\sqrt{3}: 1$
$2: \sqrt{3}$
A particle of mass $M$ moves with constant speed along a circular path of radius $ r$ under the action of a force $F$. Its speed is
A car is negotiating a curved road of radius $R$. The road is banked at an angle $\theta .$ The coefficient of friction between the tyres of the car and the road is $\mu _s.$ The maximum safe velocity on this road is
A $500\, kg$ crane takes a turn of radius $50 \,m$ with velocity of $36 \,km/hr.$ The centripetal force is ......... $N$
Write the formula for the maximum permissible speed of a vehicle moving on smooth circular balanced tracks.
A mass of $100\, gm$ is tied to one end of a string $2 \,m$ long. The body is revolving in a horizontal circle making a maximum of $200$ revolutions per min. The other end of the string is fixed at the centre of the circle of revolution. The maximum tension that the string can bear is .......... $N$. (approximately)