A body of mass m moving around...
A body of mass m moving around a circle of radius r with a uniform speed v experiences a centripetal force F. The work done by the centripetal force on it is
Fv
zero
Fmr
Frm
Correct answer is B
Work is done whenever the given conditions are satisfied. (ii) there is a displacement of the body caused by the applied force along the direction of the applied force. No displacement takes place in this case. So, work done by a centripetal force is always zero.
The work done by centripetal force in the case of a uniform circular motion is 0 joules.
An ebonite rod rubbed with fur attracts a glass rod rubbed with silk because ...
If the force of attraction between the sun and the 8 planets is removed; the planets will ...
Which of the following statements about magnetic lines of force is not correct? They ...
Calculate the resistance of the filament of lamp rated at 240V 60W ...
A wire 1.0m long and with cross-sectional area 2.0 x 10-7 m2 has a resistance of 0.1Ω. Calc...
The ground is always cold at night because the ...