Curriculum
Course: Igcse Physics
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Curriculum

Igcse Physics

1. Motion, Forces and Energy

0/161 Dr Dabour Hub Science Diagram and Course Material

2. Thermal Physics

0/75 Dr Dabour Hub Science Diagram and Course Material

3. Waves

0/77 Dr Dabour Hub Science Diagram and Course Material

4. Electricity and Magnetism

0/119 Dr Dabour Hub Science Diagram and Course Material

5. Nuclear Physics

0/39 Dr Dabour Hub Science Diagram and Course Material

6. Space Physics

0/47 Dr Dabour Hub Science Diagram and Course Material
Quiz

1.5.4 Investigating Centre of Gravity – Check yourself

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  • Questions count: 6
  • Passing grade: B+
  • Time limit: 10 minutes
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1.
When a card hangs freely from a pin, its centre of gravity is
at the pin
directly above the pin
directly below the pin
at the edge
2.
Why is a plumb line used?
To measure mass
To measure the size of the card
To hold the card
To show the vertical direction
3.
The minimum number of holes needed to find a point for the c.g. is
2
1
4
5
4.
The three lines drawn do not meet at a point. A likely reason is
gravity changed
the card is too light
friction at the pin or inexact marking
the card is too uniform
5.
The result can be tested by
weighing the card
balancing the card on a pencil tip at the found point
heating the card
measuring the pin
6.
Which choice reduces the error in the experiment?
Holes close together
Holes far apart and well separated
Thick pencil line
A heavy pin
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Part of 1. Motion, Forces and Energy — see every lesson and quiz in this unit.
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