In this question 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.
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.
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.
136 exam-style questions on CCEA A Level Maths 2.3 Forces and Newton's laws, covering 2.3.1 Forces and Newton's laws, 2.3.2 Forces and Newton's laws, 2.3.3 Forces and Newton's laws, 2.3.4 Forces and Newton's laws, 2.3.5 Forces and Newton's laws, 2.3.6 Forces and Newton's laws, 2.3.7 Forces and Newton's laws, 2.3.8 Forces and Newton's laws, 2.3.9 Forces and Newton's laws, 2.3.10 Forces and Newton's laws, 2.3.11 Forces and Newton's laws, 2.3.12 Forces and Newton's laws, and 2.3 Forces and Newton's laws. Each one has a worked solution and a mark scheme showing where the marks go.