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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 45

Use g=9.8g = 9.8g=9.8 m s−2^{-2}−2.

A woman of mass 60 kg stands on the floor of a lift.

a.

The lift accelerates vertically upwards at 1.2 m s−2^{-2}−2. Find the magnitude of the normal reaction of the floor on the woman.

[2]
b.

The lift later moves vertically downwards and decelerates at 0.9 m s−2^{-2}−2. Find the magnitude of the normal reaction of the floor on the woman.

[3]
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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