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Find the angle in radians as well as in degrees through which a pendulum swings if its length is 45 cm and its tip describes an arc of length 11 cm

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Best answer

We know that l = r × θ 

Here l = length of arc = 11 cm 

R = radius = length of pendulum = 45 cm 

We need to find θ 

11 = 45 x θ

θ = 11/45 radian

θ in degree 11/45 x 180/π = \(\frac{44}{\frac{22}7}\) = 14°

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