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

1.5.2 Equilibrium – Check yourself

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  • Questions count: 6
  • Passing grade: B+
  • Time limit: 10 minutes
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1.
Which two conditions are needed for equilibrium?
Zero resultant force only
Zero resultant moment only
Maximum force and minimum moment
Zero resultant force and zero resultant moment
2.
A 10 N weight is 0.40 m left of a pivot. What weight at 0.20 m to the right balances it?
20 N
5 N
10 N
2 N
3.
A uniform plank of weight 50 N is balanced on a pivot at its centre. The moment of the plank's weight about the pivot is
50 N m
25 N m
zero
100 N m
4.
A beam in equilibrium has total clockwise moment 36 N m. The total anticlockwise moment is
0
18 N m
72 N m
36 N m
5.
A light beam is supported at both ends and carries a 90 N load at its centre. What is the force at each support?
45 N
90 N
180 N
30 N
6.
Why is it useful to take moments about the point where an unknown force acts?
It makes the weights zero
It removes the need for equilibrium
The unknown force then has zero moment
It doubles the moments
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Part of 1. Motion, Forces and Energy — see every lesson and quiz in this unit.
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