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4.2 Moments (A-level only)

Question 9

In this question use $g = 9.8$ m s $^{-2}$ .

A uniform rod $AB\,$ of length 4 m and mass 12 kg rests horizontally in equilibrium on two supports at $C\,$ and $D$ , where $A C = x$ m and $A D = (x + 2.4)$ m.

A particle of mass 6 kg is attached to the rod at $B$ . The reaction of the support on the rod at $D\,$ is five times the reaction of the support on the rod at $C$ .

Find the value of $x$ .

[5]

State one modelling assumption you have made about the particle.

[1]

Markscheme

4.2 Moments (A-level only) Questions

A Level
Maths
4.2 Moments (A-level only)

56 exam-style questions on CCEA A Level Maths 4.2 Moments (A-level only), covering 4.2.1 Moments (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

4.2 Moments (A-level only)

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4.2 Moments (A-level only)

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Question 9

In this question use $g = 9.8$ m s $^{-2}$ .

A uniform rod $AB\,$ of length 4 m and mass 12 kg rests horizontally in equilibrium on two supports at $C\,$ and $D$ , where $A C = x$ m and $A D = (x + 2.4)$ m.

A particle of mass 6 kg is attached to the rod at $B$ . The reaction of the support on the rod at $D\,$ is five times the reaction of the support on the rod at $C$ .

Find the value of $x$ .

[5]

State one modelling assumption you have made about the particle.

[1]

Markscheme

4.2 Moments (A-level only) Questions

A Level
Maths
4.2 Moments (A-level only)

56 exam-style questions on CCEA A Level Maths 4.2 Moments (A-level only), covering 4.2.1 Moments (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.