Question

The pendulum in the form of a load suspended on a string was deflected from the equilibrium position at an angle of 60 °. The length AB of the pendulum is 20 cm. Find the distance CD from the weight C to the straight line AB passing through the initial position of the pendulum.

Answer 1

Explanation:

sin60° = Opposite / Hypotenuse = CD / CA = CD / 20cm.

Therefore CD = 20sin60° = 17.3cm.