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4 cards from this section. Quick, good the night before a test.
Identify the centre of mass of a uniform sphere.
Think about symmetry.
Where is the centre of mass of a uniform cube?
Consider the symmetry of the shape.
What is the centre of mass of a uniform disk?
Consider the symmetry of the shape.
True or False: The angular momentum is conserved if no external torque acts on the system.
Think about how external forces affect motion.
Calculate the centre of mass for an L-shaped lamina. How does symmetry play a role?
Break it down into simpler shapes.
A child on a rotating platform extends their arms, how does it affect the system's angular speed?
Think of it as balancing torque on both sides.
4 more questions in this section. Enroll free to practise them all.
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