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odinmorton
18.06.2021 •
Physics
A pendulum is made by letting a 2.0-kg object swing at the end of a string that has a length of 2.1 m. The maximum angle the string makes with the vertical as the pendulum swings is 30°. What is the speed of the object at the lowest point in its trajectory?
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Ответ:
The speed of the object at the lowest point in its trajectory is:
Explanation:
We can use the conservation of energy between the maximum point of swing and the lowest point of the pendulum.
Where:
h is the height of the object at 30° with the vertical.v is the speed at the lowest point.We can find h using trigonometry.
Now, using equation (1) we can find v.
I hope it helps you!
Ответ:
It becomes more stable by repositioning its particles and as a result, emits radiation in the process.
Explanation: