Questions in Motion in A Plane

Select	Question
	In an atom for the electron to revolve around the nucleus, the necessary centripetal force is obtained from the following force exerted by the nucleus on the electron
	A particle moves with constant speed v along a circular path of radius r and completes the circle in time T. The acceleration of the particle is
	The maximum velocity (in ms–1) with which a car driver must traverse a flat curve of radius 150 m and coefficient of friction 0.6 to avoid skidding is
	A car is moving with high velocity when it has a turn. A force acts on it outwardly because of
	A motor cycle driver doubles its velocity when he is having a turn. The force exerted outwardly will be
	The coefficient of friction between the tyres and the road is 0.25. The maximum speed with which a car can be driven round a curve of radius 40 m without skidding is (assume $g = 10 ms^{–2}$)
	An athlete completes one round of a circular track of radius 10 m in 40 sec. The distance covered by him in 2 min 20 sec is
	A proton of mass $1.6 \times 10^{–27}$ kg goes round in a circular orbit of radius 0.10 m under a centripetal force of $4 \times 10^{–13}$ N. then the frequency of revolution of the proton is about
	A particle is moving in a circle with uniform speed v. In moving from a point to another diametrically opposite point
	In uniform circular motion