Curriculum
Course: IB Physics HL
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Curriculum

IB Physics HL

Theme A — Space, Time and Motion

0/125 Dr Dabour Hub Science Diagram and Course Material

Theme B — The Particulate Nature of Matter

0/105 Dr Dabour Hub Science Diagram and Course Material

Theme C — Wave Behaviour

0/73 Dr Dabour Hub Science Diagram and Course Material

Theme D — Fields

0/77 Dr Dabour Hub Science Diagram and Course Material

Theme E — Nuclear and Quantum Physics

0/89 Dr Dabour Hub Science Diagram and Course Material

Tools and Inquiry — IB Physics skills

0/43 Dr Dabour Hub Science Diagram and Course Material
Quiz

A.4.2 Rotational Equilibrium – Check yourself

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  • Questions count: 6
  • Passing grade: B+
  • Time limit: 10 minutes
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1.
Which pair of conditions is needed for equilibrium of a rigid body?
Net force zero only
Net torque zero only
Net force zero and net torque zero
Constant speed only
2.
A 2.0 m uniform seesaw is pivoted at its centre. A 300 N child sits 1.5 m from the pivot. Where must a 450 N child sit to balance it?
0.5 m
1.0 m
1.5 m
2.25 m
3.
Why choose the pivot at the point where an unknown force acts?
It is required by the principle
That force has zero torque and drops out
It makes the force zero
It removes the weight
4.
A uniform beam of weight 100 N is supported at its ends. The force at each support is
25 N
50 N
100 N
200 N
5.
A uniform 1.0 m rule balances at the 40 cm mark when a 2.0 N mass is hung at the 10 cm mark. The weight of the rule is
1.0 N
2.0 N
6.0 N
4.0 N
6.
Which change makes a stationary object more stable?
Raising its centre of gravity
Narrowing the base
Lowering the centre of gravity
Adding a load at the top
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Part of Theme A — Space, Time and Motion — see every lesson and quiz in this unit.
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