Question

the foot of a ladder rests against a wall at 37° from the wall and its top is held by a tie rope. the ladder weighs 100n and the center of gravity is 0.40m length from the foot. an 150n child hangs from a rung that is 0.20m from teh top. determine the tension in the tie rope and the components of the force of the foot of the ladder.

Answer 1

Completing Question : Length of ladder 1m 
Angle made by ladder with the vertical is 37°
Final Answer : 

Horizontal Component of force acting on the foot of ladder : = Tension of rope =120N
Vertical Component : 250N 
Steps and Understanding :
1) System is in Equilibrium, 
So Net Torque about any point is 0 .

2) Let that point be Foot of ladder. 
There are forced which are giving torque to ladder. 
Tension 
Force applied by Child
Gravitational force. 

3) We will make out ne+ torque 0 to find the value of Tension. 

For Calculation see pic.