A body is revolving with a constant speed along a circle. If its direction of motion is reversed but the speed remains the same, then which of the following statement is true
The centripetal force will not suffer any change in magnitude
The centripetal force will have its direction reversed
The centripetal force will not suffer any change in direction
Both $(a)$ and $(c)$
A car is moving on a circular path and takes a turn. If ${R_1}$ and ${R_2}$ be the reactions on the inner and outer wheels respectively, then
A block of $200\, g$ mass moves with a uniform speed in a horizontal circular groove, with vertical side walls of radius $20\, cm$. If the block takes $40\, s$ to complete one round, the normal force by the side walls of the groove is
A car of mass $1000\, kg$ negotiates a banked curve of radius $90\, m$ on a frictionless road. If the banking angle is $45^o $, the speed of the car is ....... $ms^{-1}$
A motor car has a width $1.1$ m between wheels. Its centre of gravity is $0.62$ m above the ground and the coefficient of friction between the wheels and the road is $0.8$. ...... $m/s$ is the maximum possible speed, if the centre of gravity inscribes a circle of radius $15$ m ? (Road surface is horizontal)
A thin circular loop of radius $R$ rotates about its vertical diameter with an angular frequency $\omega .$ Show that a small bead on the wire loop remains at its lowermost point for $\omega \leq \sqrt{g / R} .$ What is the angle made by the radius vector jotning the centre to the bead with the vertical downward direction for $\omega=\sqrt{2 g / R} ?$ Neglect friction.