___________
Science
Hidden forces
Starter quiz
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Complete the statement. The word used to describe the force on an object due to a gravitational field is ...
'weight' ✓
A pupil puts different forces on a spring. Starting with the smallest extension, sort the forces into order of the extension they cause.
1
⇔
1.0 N
2
⇔
1.5 N
3
⇔
2.0 N
4
⇔
2.5 N
5
⇔
3.0 N
6
⇔
6.0 N
The figure shows a spring before and after a weight has been added. What is the extension of the spring when the mass is placed on it?
0 cm
4.0 cm
4.5 cm ✓
10.5 cm
14.5 cm
The photograph shows a pupil measuring the extension of a spring. How could the pupil improve the accuracy of the measurement?
Use a shorter spring to make the extension shorter.
Use a longer ruler to reach the spring.
Use a set square to make sure the measurement is horizontal. ✓
Move the ruler further from the spring to keep it balanced.
Use a longer spring to make the extension shorter.
The gravitational field strength on Earth is 10 N/kg. What size mass will have a weight of 1 N?
10 kg
1 kg
1000 g
100 g ✓
10 g
Why is it important to measure the extension of a spring when masses are taken off as well as being added?
This will help loosen the spring and make it stretch better.
The masses may have changed after they were added.
To help check the accuracy of the measurements. ✓
So that a wider range of masses can be used.
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