A wheel can move along a tightrope cable without falling off, if the wheel's centre of mass is altered.
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Pressure applied over an area generates a force that can do work. Changing the area or the pressure increases or decreases the force.
You’ve seen regular bubbles that are made of a layer of liquid that surrounds a sphere of air. Now it’s time to try making antibubbles! These are bubbles that are made of a layer of air surrounding a sphere of liquid.
A wheel's rotational inertia changes when its mass is mostly located near the centre or near the rim.
Join BJ and Dion as they discover all about Reptiles and Frogs in this edition of Science Time.
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