Question

A pendulum bod weighing 500 gm is suspended on a fine wire. what is the tension on the wire when the bod wings at an angle of 60 degree from the vertical?

Answer 1

$$\sum F_y=0:\quad T\cos 60^{\circ}-mg=0$$

$$T=mg/\cos 60^{\circ}\\ =0.500\:\rm kg*9.8\: N/kg/\cos 60^{\circ}=9.8\: N$$