What is the period of a ball tied to a string of length 1.2 m making 4.5 revolutions every second?
I found
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The period of the ball tied to the string is approximately 0.222 seconds.
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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
- A model train, with a mass of #5 kg#, is moving on a circular track with a radius of #9 m#. If the train's rate of revolution changes from #4 Hz# to #5 Hz#, by how much will the centripetal force applied by the tracks change by?
- In the Bohr model of the hydrogen atom, an electron (mass = 9.10 10-31 kg) orbits a proton at a distance of 4.76x10-10 m. The proton pulls on the electron with an electric force of 1.02x10-9 N. How many revolutions per second does the electron make?
- A model train with a mass of #6 kg# is moving along a track at #8 (cm)/s#. If the curvature of the track changes from a radius of #3 cm# to #16 cm#, by how much must the centripetal force applied by the tracks change?
- A model train with a mass of #3 kg# is moving along a track at #12 (cm)/s#. If the curvature of the track changes from a radius of #4 cm# to #18 cm#, by how much must the centripetal force applied by the tracks change?
- A particle moves in a circle of radius 25cm covering 2 revolutions per second what will be the radial acceleration of that particle?

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