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3.3 R: Forces and Newton's laws

3.3 R: Forces and Newton's laws

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Question 4

Two particles C C\,C of mass 3 kg and D D\,D of mass 5 kg are connected by a light inextensible string. The string passes over a smooth pulley fixed at the top of a rough inclined plane. The plane is inclined at an angle of 35∘ 35^\circ\,35∘ to the horizontal. C C\,C lies at rest on the plane and D D\,D hangs freely from the edge of the plane with the string taut. Particle C C\,C is released from rest and accelerates up the plane at 2 ms-2.

a.

Find the tension in the string

[3]
b.

Find the coefficient of friction between C C\,C and the plane

[3]
c.

Find the force exerted on the pulley by the string

[3]
Markscheme

3.3 R: Forces and Newton's laws Questions

  1. A Level
  2. /Maths
  3. /3.3 R: Forces and Newton's laws

139 exam-style questions on AQA A Level Maths 3.3 R: Forces and Newton's laws, covering 3.3.1 Concept of a force and Newton's first law, 3.3.2 Newton's second law, 3.3.3 Weight and motion under gravity, 3.3.4 Newton's third law and equilibrium, 3.3.5 Addition of forces and resultants (A-level only), and 3.3.6 Friction (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

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