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Grade: 9

A light pointer fixed to one prong of a tuning fork touches a vertical plate. the fork is set vibrating at a frequency of 56 Hz and allowed to free fall . how many complete oscillatons are counted when platye falls at10 cm.
A light pointer fixed to one prong of a tuning fork touches a vertical plate. the fork is set vibrating at a frequency of 56 Hz and allowed to free fall . how many complete oscillatons are counted when platye falls at10 cm.


3 years ago

## Answers : (1)

Arun
25768 Points
							Dear Mukesh t = $\LARGE \sqrt$(2*0.1)/9.8t = (1/7) sec Frequency is 56 Hz. Which means in 1 sec it makes 56 vibrations.Hence in 1/7 sec it will make = 56/7 = 8 counts  RegardsArun(askIITians forum expert)

3 years ago
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