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Will tension of a pendulum changes when it is oscillatin?why?

Will tension of a pendulum changes when it is oscillatin?why?

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2 Answers

Venkat
273 Points
5 years ago
The tension of an osciallting pendukun is derived as :
T=mgcos\theta+mv^2/l  …...(1)
Here, theta is the angle made by pendulum with vertical line drawn through pivot. So at 90 degrees or the pendulum is horizonatl, the first term is zero, and when 0 degress or the pendulum is vertical, the first term is zero or in other words the tension is maxium. Between 0 and 90 degrees the tension changes and varies from max tension to minimum tension.
 
So at 90 degrees, the tension is,
T=mgcos90+mv^2/l \\T_{minimum}=mv^2/l
 
At  0 degrees,
T_{maximum}=mgcos0+mv^2/l \\T_{max}=mg+mv^2/l
 
To derive the  equation (1), watch the youtube video by ashish arora for tension of a swinging pendulum under physics under circular motion.
 
 
Khimraj
3007 Points
5 years ago
Yes it changes.

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