- Question: A particle of mass m is moving with a uniform speed v in a circular path of radius r. Find the centripetal force acting on the particle.
Answer: The centripetal force acting on the particle is given by:
F = mv^2/r
This is because the centripetal force is the force that keeps the particle moving in a circular path. It is always directed towards the center of the circle, and its magnitude is proportional to the square of the particle’s speed and inversely proportional to the radius of the circle.
- Question: A particle is moving in a circular path with a constant speed. The work done by the centripetal force on the particle is:
Answer: The work done by the centripetal force on the particle is zero. This is because the centripetal force is always perpendicular to the motion of the particle, and therefore does no work.
- Question: A satellite is revolving around the earth in a circular orbit. The centripetal force acting on the satellite is provided by:
Answer: The centripetal force acting on the satellite is provided by the gravitational force of attraction between the earth and the satellite
