A scientist prepares a test tube 10 cm from the axis of rotation in a centrifuge. The centrifuge starts at rest, and every second thereafter, the rotation rate of the centrifuge increases by 400 rpm, up to the maximum of 4000 rpm. Draw a scaled and labeled graph of the centrifugal force (in Newtons) vs. time on a particle of mass 0.01 grams inside the test tube, with data points for each second from 1 to 10. Explain how you know if your graph of force vs. time should be linear or parabolic.

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Conservation of Energy

In physics, the rule of the conservation of energy states that energy doesn’t disappear from the atmosphere; instead, it changes its form from one type to another. Energy is one of the most important physical quantities in nature, and it cannot be created or destroyed — only transformed.