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4.2 Moments (A-level only)

Question 6

A uniform rod of length 2L metres and mass $m\,$ kilograms rests horizontally in equilibrium on two fixed supports at the points $A\,$ and $B$ .

$A\,$ lies at a distance $x\,$ metres from one end of the rod. $B\,$ lies at a distance $(x + 0.15)$ metres from the other end of the rod.

Figure for question 2

The reaction force of the support on the rod at $B\,$ is three times the reaction force of the support on the rod at $A$ .

Show that $L - x = k$ , where $k\,$ is a constant to be found.

[4]

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 6

A uniform rod of length 2L metres and mass $m\,$ kilograms rests horizontally in equilibrium on two fixed supports at the points $A\,$ and $B$ .

$A\,$ lies at a distance $x\,$ metres from one end of the rod. $B\,$ lies at a distance $(x + 0.15)$ metres from the other end of the rod.

Figure for question 2

The reaction force of the support on the rod at $B\,$ is three times the reaction force of the support on the rod at $A$ .

Show that $L - x = k$ , where $k\,$ is a constant to be found.

[4]

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.