Required practical - Force and extension (AQA GCSE Physics Combined Science): Quizzes

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Required practical - Force and extension
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12 questions from this quiz

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What is the main aim of this practical investigation?

Find how extension changes with weight

Why is a pointer attached to the bottom of the spring?

To eliminate parallax errors

Why must you always wear eye protection during this practical?

Springs store elastic energy and could snap

What is the key difference between weight and mass?

Weight is a force in N, mass is in kg

On Earth, a mass of 100g produces approximately what weight?

1 N

How do you calculate the extension of a spring?

New length - original length

When plotting results, which variable goes on the x-axis?

Force (weight)

What should your graph look like if the investigation is successful?

Straight line through the origin

What does the gradient of the force-extension graph represent?

The spring constant kk

What is Hooke's Law?

F=kxF = kx

What happens if you stretch a spring beyond its limit of proportionality?

It won't return to original length

How should you read measurements to avoid parallax errors?

At eye level with the ruler

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