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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 6

Two blocks P P\,P of mass 4 kg and Q Q\,Q of mass 6 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 25∘ 25^\circ\,25∘ to the horizontal. Block P P\,P lies on the plane and Q Q\,Q hangs freely from the pulley with the string taut. Block P P\,P is released from rest and accelerates up the plane at 1.5 ms-2.

a.

Find the tension in the string

[3]
b.

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

[3]
c.

Find the force exerted on the pulley by the string

[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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