Question

WILL MARK AS BRAINLIEST

Answer 1

Step-by-step explanation:

The pendulum swings over an angle of 2×(2°30') or 5° so we need to convert this to radian measure first:

$5° × \left(\dfrac{\pi}{180°}\right) = 0.0873\:\text{rad}$

so the arc length is given by

$s = r\theta = (50\:\text{cm})(0.0873\:\text{rad}) = 4.36\:\text{cm}$