ic: You are an astronaut on the international space station. As you're unpacking the most recent shipment of plies you notice that there are two unlabeled identical containers. From the manifest you know that one should tain sand and the other feathers (for some density experiments). Without opening the containers, explain how use your knowledge of Newton's law to determine which container is which. (Hint: Everything is in free fall on space station so you won't be able to weigh the containers)

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Centripetal Force

A particle, body, object or certain mass while travelling in a rotational path or semicircular path, experiences an inertia force. If that inertia force pulls the towards the inward of the imaginary circle in the rotation, it is termed as centripetal force.