A uniform rod 9 m long weighing 40 kg is pivoted at a point 2 m from one end where a weight of 120 kg is suspended. The required force acting at the end in a direction perpendicular to rod to keep it equilibrium, at an inclination 60° with horizontal, is____.

A)
10 kg
B)
40 kg
C)
60 kg
D)
100 kg

Correct Answer :   10 kg