A pendulum bob on a long string is raised 1.1 m above its lowest point. When it is let go, we can determine the speed of the bob as it passes through its lowest point even if we have no idea of its mass
What will be an ideal response?
This is correct. The potential energy is mgh. The kinetic energy at the bottom is 12mv2 . Because there is a factor of mass in both, and because one is transformed into the
other, the result is independent of mass.
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