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1.5 Forces

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Question 12

A planet is in a circular orbit of radius R R\,R around a star. The orbital period of the planet is TTT. Which expression gives the magnitude of the centripetal acceleration of the planet?

A

4π2RT2\frac{4\pi^2 R}{T^2}T24π2R​

B

4πR2T\frac{4\pi R^2}{T}T4πR2​

C

2πRT2\frac{2\pi R}{T^2}T22πR​

D

4π2R2T\frac{4\pi^2 R^2}{T}T4π2R2​

Markscheme

1.5 Forces Questions

  1. IGCSE
  2. /Physics
  3. /1.5 Forces

245 exam-style questions on CIE IGCSE Physics 1.5 Forces, covering 1.5.1a Forces, resultant force and motion, 1.5.1b Load–extension graphs and the spring constant, 1.5.1c Friction and drag, 1.5.1d Force, mass and acceleration, 1.5.1e Motion in a circular path, 1.5.2a Moment of a force, 1.5.2b Principle of moments and equilibrium, and 1.5.3 Centre of gravity and stability. Each one has a worked solution and a mark scheme showing where the marks go.

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