Cambridge IGCSE Physics practice

Paper 3 structured question: Turning effect of forces

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Paper

Marks

Topic

Turning effect of forces

Exam-style question

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Paper 3Theory (Core)1 marks

A uniform beam is balanced on a pivot. A weight of 10 N is placed 1.5 m from the pivot on one side.

Description

On the other side of the pivot, a weight is placed to balance the beam.

a
State the condition for the beam to be in equilibrium.
Your answer
Aim for approximately 1 distinct marking point.
[1]

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Paper 3Theory (Core)3 marks

Description

Weight A is 20 N and is 2 m from the pivot. Weight B is unknown and is 3 m from the pivot.

a
Determine the weight B required to keep the beam in equilibrium.
Your answer
Aim for approximately 3 distinct marking points.
[3]