The length of a pendulum is 4 metres while the pendulum swing through 1/2rqdians,find the length of the arc through which the tip of the pendulum passes
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length of pendulum is equal to radius r which is 4m
angle a=1/2radians
let the length of Arc =l
formula...a=l/r
1/2=l/4
l =4/2
l=2
hence the length of Arc is 2m
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