What is a centripetal force?

A metal bob of mass 0.6 kg is attached to the end of a string of length 1 m and the bob is whirled in a horizontal circle with a uniform speed of 12 m/s. What is the centripetal force acting on the bob ? If the speed of the bob is 5 m/s calculate the tension in the string.

The speed of the electron in the hydrogen atom is approximately 2.2 xx 10^(6) m//s . What is the centripetal force acting on the electron ifthe radius of the circular orbit is 0.53 xx 10^(-10) m ?Mass of the electron is 9.1 xx 10^(-31) kg

Consider the circular motion f the earth around the sun. Which of the following statements is more appropriate? a. Gravitational attraction of the sun on the earth is equal to the centripetal force. b. Grvitational attraction of the sun on the earth is the centripetal force.

What is the centripetal acceleration of a space vehicle moving round the earth, assuming its orbit to be circular ? What is the apparent weight of an astronaut ?

Is centrifugal force the force of reaction of centripetal force ?

What is centripetal acceleration ? Why is it called so ?

If a particle of mass m is moving in a horizontal circle of radius r with a centripetal force (-1//r^(2)) , the total energy is

With reference to the direction of action, how does a centripetal force differ from a centrifugal during uniform circular motion ?

An electron of mass m, moves around the nucleus in a circular orbit of radius .r. under the action of centripetal force .F.. The equivalent electric current is

What is centripetal acceleration ? Find its magniude and direction in case of a uniform circualar motion of an object .