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Circular motion

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1
Question 1

A small block of mass m m\,m is attached to a string and whirled in a horizontal circle of radius r r\,r on a frictionless tabletop. The linear speed of the block is vvv. The tension in the string is kept constant as the radius of the circle is varied.

Which relationship is correct for this system?

A

v∝1rv \propto \frac{1}{r}v∝r1​

B

v∝r2v \propto r^2v∝r2

C

v∝rv \propto rv∝r

D

v2∝rv^2 \propto rv2∝r

Markscheme

Circular motion Questions

  1. A Level
  2. /Physics
  3. /Circular motion

5 exam-style questions on OCR A A Level Physics Circular motion, covering Kinematics of circular motion and Centripetal force. Each one has a worked solution and a mark scheme showing where the marks go.

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