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1.5 Forces

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Question 43

A small ball attached to a string is whirled in a horizontal circle at a constant speed. Which statement correctly describes the resultant force on the ball?

A

The resultant force is zero because the speed is constant.

B

The resultant force is directed outwards, away from the center of the circle.

C

The resultant force is directed inwards, towards the center of the circle.

D

The resultant force is in the direction of the ball's motion.

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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