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4.9 Forces and Newton's laws (A-level only)

4.9 Forces and Newton's laws (A-level only)

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Question 47

In this question, use g=9.8 m s−2g = 9.8 \text{ m s}^{-2}g=9.8 m s−2.

A robotic transport sled, SSS, is pulled across a rough horizontal factory floor.

A horizontal pulling force of magnitude PPP newtons acts on SSS.

SSS moves with a constant acceleration of 1.25 m s−21.25 \text{ m s}^{-2}1.25 m s−2.

SSS has a weight of 15.68 N15.68 \text{ N}15.68 N.

The only resistance force acting on SSS is due to friction.

The coefficient of friction between SSS and the floor is 0.30.30.3.

Find PPP.

[5]
Markscheme

4.9 Forces and Newton's laws (A-level only) Questions

  1. A Level
  2. /Maths
  3. /4.9 Forces and Newton's laws (A-level only)

106 exam-style questions on WJEC A Level Maths 4.9 Forces and Newton's laws (A-level only), covering 4.9.1 Forces and Newton's laws (A-level only), 4.9.2 Forces and Newton's laws (A-level only), 4.9.3 Forces and Newton's laws (A-level only), 4.9.4 Forces and Newton's laws (A-level only), and 4.9.5 Forces and Newton's laws (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

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