- #1
gup08
- 5
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Homework Statement
Video was recorded with a 240 fps camera. It took 93 frames for the pendulum to go from 90 deg to the bottom. The pendulum length is 51 cm.
Homework Equations
Find the max velocity
The Attempt at a Solution
From the simple pendulum equation, I should get around 11.36 km/hr. Given that its 51 cm, with a 90 deg angle.
If it takes 0.3875 seconds, based off that each frame has 0.004 seconds.. 0.0041667 sec * 93 = 0.3875 seconds. Then velocity is 51cm(difference in height)/ 0.3875seconds = 131.613 cm/s and when converted to km/hr it results in 4.738 km/hr!
Roughly half of the theoretical. Is it the height that I am not thinking correctly?