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#### Joe_1234

##### New member
A 6 m ladder weighs 350N and is placed with its lower end on a horizontal floor and its upper end against the wall. The angle between the wall and the ladder is 30°. A man weighing 900N is to climb to the very top of the ladder. The coefficient of friction between the floor and the ladder to avoid the danger of slipping is?

#### MarkFL

Staff member
Can you show what you have so far so we know where you're stuck?

#### skeeter

##### Well-known member
MHB Math Helper
$\sum F_x = 0$, $\sum F_y = 0$, and $\sum \tau = 0$

#### skeeter

##### Well-known member
MHB Math Helper
I forgot there is a friction between the wall and the ladder which is 0.20
Which direction do you think the wall friction acts on the ladder?