Friday

January 30, 2015

January 30, 2015

Posted by **Jessica** on Sunday, November 7, 2010 at 11:40pm.

- Physics -
**Damon**, Monday, November 8, 2010 at 3:13am3,4,5 triangle

Vertical forces

200 N down at middle, 1.5 m from foot of ladder

700 N down at (3x/5) from foot of ladder

900 N up at foot of ladder

Horizontal forces

F at top of ladder, 4 m above base

900 mu at base of ladder = F at top

take moments about

base of ladder

700 (3x/5) + 200(1.5) - 4F = 0

but F = .5*900 = 450

so

700(3x/5) +300 = 1800

420 x = 1500

x = 3.57

- Physics -
**Costa**, Sunday, December 11, 2011 at 2:01pmwhat about the friction?

- Physics -
**d**, Monday, November 4, 2013 at 6:02pmwhere did the 3x/5 come from

**Answer this Question**

**Related Questions**

physics - A uniform ladder, 3 m long and weighing 130 N, placed against a smooth...

phsics - uniform ladder 25 ft long rests against a smooth vertical wall. The ...

SCIENCE - A uniform ladder which is 10metres long and weighs 300newtons leans ...

ap physics b - A uniform ladder 8.09 m long and weighing 201.0 N rests against a...

Physics - A uniform ladder 10.0m long and weighing 50.0N rests against a smooth ...

statics/physics - The uniform 10-kg ladder in the figure rests against the ...

Physics - A 6m long uniform ladder which has a mass of 25kg leans with its upper...

physics - A 50 kg uniform ladder, 5.0 m long, is placed against a smooth wall at...

physics - A 50 kg uniform ladder, 5.0 m long, is placed against a smooth wall at...

physics - An 9.0 m, 210 N uniform ladder rests against a smooth wall. The ...