When a body is whirled in a horizontal circle by means of a string, the centripetal force is supplied by:
Correct answer: B. Tension in the string
- A. Mass of a body
- B. Tension in the string
- C. Velocity of a body
- D. Centripetal acceleration
Explanation
Option B is correct. Yes, the centripetal force is supplied by the tension in the string. When a body is whirled in a horizontal circle by means of a string, the string exerts a force on the body towards the centre of the circle. This force is called the centripetal force. The centripetal force is necessary to keep the body moving in a circular path. The tension in the string is the force that the string exerts on the body. The tension in the string is equal to the centripetal force. The tension in the string is given by the following equation:T = Fc = mv2/r
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Angular and Linear Quantities
Rotational motion relates angular displacement, angular velocity and angular acceleration to linear displacement, tangential velocity and tangential acceleration through the radius. Questions use radians, v equals r omega and tangential acceleration, while distinguishing tangential velocity from centripetal acceleration and angular quantities from their linear counterparts.
Practise Rotational and Circular Motion
521 free Rotational and Circular Motion MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Physics questions like this
Physics is on 16 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Angular and Linear Quantities questions
A stone to the end of a string 1m is whirled ina horizontal circle with a constant speed. If the stone makes 22 revolution in 44 seconds, What is the magnitude and direction of a acceleration of the stone.
A particle of mass m is executing uniform circular motion on a path of radius r. If P is the magnitude of its linear momentum. The radial force acting on the particle is
A stone of mass 250g is tied to the end of a string of length 1.0m. It is whirled in a horizontal circle with a frequency of 30rev/min. What is the tension in the string ?
A body of mass 10kg, is moving with a velocity of 5m/s in a circle of radius 5m, what is the centripetal acceleration of the body?
A particle moves on a circular path with decreasing speed. Choose the correct statement.
An angular ring with inner and outer radii R1 and R2 is rolling without slipping with a uniform angular speed. The ratio of the forces experienced by the two particles situated on the inner and outer pairs of the ring, F1/F2 is