Skip to content

Course home

2.3 Forces and Newton's laws

2.3 Forces and Newton's laws

EasyMediumHard
12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970
Question 51

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

A museum curator attempts to reposition a bronze sculpture of mass 40 kg40 \text{ kg}40 kg across a rough horizontal gallery floor. The coefficient of friction between the sculpture and the floor is 0.550.550.55.

a.

The curator first tries to push the sculpture with a horizontal force of 210 N210 \text{ N}210 N. Show that the sculpture does not move.

[3]
b.

The curator then attaches a harness and pulls the sculpture. The harness acts at an angle of 25∘25^\circ25∘ above the horizontal. The curator exerts a tension of 210 N210 \text{ N}210 N in the harness. Determine whether the sculpture remains stationary under these conditions. Justify your answer with calculations.

[4]
Markscheme

2.3 Forces and Newton's laws Questions

  1. A Level
  2. /Maths
  3. /2.3 Forces and Newton's laws

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.

Question bank