Question

Heyy guys need ur help!!

plzzz;(

Answer 1

The figure shows the situation:

here Ng is the reaction of ground, Nw is the reaction of the wall and f is the force due to friction. In this condition when ladder is at rest all forces are balanced so 
for horizontal forces,
Nw=f  

for vertical forces ,
Ng=20+50N

so ,
Ng=70 N

also torques due to these forces are in equilibrium.
therefore,...
torques in anti clock wise direction=torques in clock wise direction.....
or...
τ(wall)=τ(ladder) + τ(man)

 (all torques are taken about ground poin A)

Nwsin60∘·6=20×3sin30+50×4sin30∘Nw×3√2×6

=60×12+200×12Nw

=26063√Nw

=25.01 N

HOPE IT HELPS

Answer 2

Heyyyy here is your answer in attachment