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SingaporeCombined ScienceQuick questions
Physics: Measurement, Forces and Energy
Quick questions on Moments and pressure explained: O-Level Combined Science
7short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What is the moment of a force?Show answer
A moment is the turning effect of a force about a pivot:
What are the principle of moments?Show answer
When an object is balanced (in equilibrium) and not turning, the total clockwise moment about any pivot equals the total anticlockwise moment:
What is pressure?Show answer
Pressure is the force acting per unit area:
What are pressure in liquids?Show answer
In a liquid the pressure increases with depth, because a deeper point has more liquid weighing down on it. The pressure due to a column of liquid is:
What is q1?Show answer
Define the moment of a force. [2 marks]
What is q2?Show answer
A force of acts on an area of . Find the pressure. [2 marks]
What is q3?Show answer
Explain why pressure in a liquid increases with depth. [2 marks]
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