Home › JEE Main › Physics › Newton's Laws of Motion › In circular motion at radius r and speed v, the …
In circular motion at radius r and speed v, the centripetal acceleration is:
Av/r
Bv²/r
Cr/v
Dmv²
Answer & Solution
Correct answer: B. v²/r
a_centripetal = v²/r — directed toward the center. Alternatively, a = ω²r where ω is angular velocity. This is the acceleration required to keep the body on its circular path.
Related questions
A book sliding across a smooth wooden desk gradually slows and stops. The force responsiblA gun of mass $4$ kg fires a bullet of mass $0.04$ kg at $300$ m/s. Recoil speed of the guA batsman strikes a ball of mass $0.15$ kg moving at $20$ m/s, sending it back at $20$ m/sA coin sitting on a bus seat slides forward when the bus brakes suddenly. This is best expA car of mass 1000 kg moving at 36 km/h is stopped by brakes in 5 seconds. Average force eA pendulum of mass m swings to amplitude angle θ. At the lowest point of swing, the TENSIOTwo equal masses (3 kg each) connected by a light string over a frictionless pulley. One oA 50 kg person stands on a scale in an elevator accelerating UP at 2 m/s². Scale reading: