Can i please have a detail explanation of the answer? 23. A uniform ladder rests

Question

Can i please have a detail explanation of the answer?

23. A uniform ladder rests against a vertical wall where there is negligible friction. The bottom of the ladder rests on rough ground where there is friction. The top of the ladder is at a height h above the ground and the foot of the ladder is at a distance 2a from the wall. The diagram shows the forces which act on the ladder. ladder wt Which equation is formed by taking moments? Wa + Fh= 2W a B Fa+ Wa = Fh. C wa + 2w a= Fh D Wa- 2W a = 2Fh (June 2008/P/Q14)

Explanation / Answer

force F and downward W , both will try to rotate clockwise whereas upward W will try to rotate counterclockwise.

so equatio is

Wa+ Fh = 2 Wa

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