Monday

January 26, 2015

January 26, 2015

Number of results: 2,923

**math**

toby the cat is stuck in a tree. billys dad placed a ladder 5 feet from the base of the tree and then leaned the ladder against the tree. the top of the ladder is where toby is sitting. if the ladder makes a 65 degree angle with the ground, how far up the tree is the cat?
*July 2, 2010 by Teri*

**AP calc bc**

A 25-ft ladder rests against a vertical wall. If the bottom of the ladder slides away from the wall at a rate of 0.18 ft/sec, how fast, in ft/sec, is the top of the ladder sliding down the wall, at the instant when the bottom of the ladder is 20 ft from the wall? Answer with 2...
*December 10, 2014 by Zachary Griner*

**physics**

If the coefficient of static friction is 0.350, and the same ladder makes a 64.0° angle with respect to the horizontal, how far along the length of the ladder can a 71.9-kg painter climb before the ladder begins to slip? The same ladder is 46.7 Newtons in weight and 10.4 ...
*October 23, 2010 by heather*

**Geometry**

The angle of elevation of a ladder leaning against a wall is 45°. If the distance from the base of the ladder to the wall is 15 feet, find the length of the ladder.
*October 22, 2012 by Patrick*

**Math**

The base of a ladder leaning against a house is 30ft from the wall. if the ladder reaches 40ft high on the wall , how long is the ladder?
*January 7, 2013 by Macy*

**Algebra**

I need to find the slope of a ladder that is leaning against a building. The bottom of the ladder is 9 ft from the building and the top of the ladder is 16 ft above the ground.
*February 19, 2013 by Todd*

**math**

A ladder is 13.0m long. It leans against the wall. The base of the ladder is 3.7m from the wall. What is the angle of inclination of the ladder to the nearest tenth of a degree?
*June 4, 2014 by liya*

**geometry**

a ladder leaning against a wall makes a 60 degree angle with the ground. the based of the ladder is 4m from the building. how high above the ground is the top of the ladder
*December 7, 2011 by anonymous*

**math**

a ladder leaning against a wall makes a 60 degree angle with the ground. the base of the ladder is 4m from the building. how high above the ground is the top of the ladder?
*December 13, 2011 by michael*

**trig.**

A ladder 20 feet long leans against the side of a house. Find the height from the top of the ladder to the ground if the angle if the angle of elevation of the ladder is 80°
*March 7, 2012 by julie*

**trig.**

A ladder 20 feet long leans against the side of a house. Find the height from the top of the ladder to the ground if the angle if the angle of elevation of the ladder is 80°
*March 7, 2012 by julie*

**GEOMETRY**

3. A ladder leaning against a wall makes a angle with the ground. The base of the ladder is 4 meters from the building. How high above the ground is the top of the ladder?
*June 21, 2012 by MAKIL*

**calc**

A 18 -ft ladder leans against a building so that the angle between the ground and the ladder is 82 ^\circ. How high does the ladder reach on the building?
*September 17, 2012 by michael*

**Math**

A 15 ft ladder is leaning against the wall. The top of the ladder reaches 10ft up the wall. What is the angle that the ladder makes with the ground?
*June 18, 2014 by John tuckernam*

**physics**

A person with mass 70 kg is climbing a ladder (length 6m, mass 20 kg) that leans against a smooth wall (no friction). A frictional force fs between the ladder and the floor keeps it from slipping. The angle between the ladder and the wall is 30 degrees. What is the magnitude ...
*July 7, 2010 by josh*

**math**

A ladder , 5 meter long , standing on a horizontal floor , leans against a vertical wall . If the top of the ladder slides downwards at the rate of 10 cm/sec . Find the rate at which the angle between the floor and the ladder is decreasing when the lower end of the ladder is 2...
*June 19, 2011 by lucky*

**Math**

A 25 foot ladder is leaning against a house at a 63 degree angle. How far up does it reach off the ground?
*November 28, 2014 by Abha*

**calculus**

A 25-ft ladder rests against a vertical wall. If the bottom of the ladder slides away from the wall at a rate of 0.18 ft/sec, how fast, in ft/sec, is the top of the ladder sliding down the wall, at the instant when the bottom of the ladder is 20 ft from the wall?
*December 16, 2014 by Anonymous*

**Physics falling ladder**

A ladder leaning against a wall is falling. The ladder is of length, L, and at this instant the ladder is at an angle, theta(Ø), with respect to the wall, and the horizontal velocity of the base of the ladder ,v_A, is known. All answers are I'm the terms given , fixed ...
*November 11, 2013 by Joldox*

**algebra 2**

A ladder of 25ft is placed against a building in such a way that the distance from the top of the ladder to the ground is 12ft more than the distance from the bottom of the ladder to the building. What is the quadratic equation used to find the distance from the bottom of the ...
*June 12, 2013 by Anonymous*

**Math **

A 20 meter ladder is leaning against a house.The bottom of the ladder is 15 meters away from the house. How far, to the nearest tenth, is the top of ladder from the ground? Do I multiply 20,x 15? I don't know how to do the problem
*December 17, 2012 by Marco*

**Math **

A 20 meter ladder is leaning against a house.The bottom of the ladder is 15 meters away from the house. How far, to the nearest tenth, is the top of ladder from the ground? Do I multiply 20,x 15? I don't know how to do the problem
*December 17, 2012 by Marco*

**Math**

A fire ladder extends 18m. Each storey of a burning building is 10ft. If the ladder can have a maximum angle with the ground of 75 degrees, to what storey would the ladder reach?
*January 7, 2013 by Anonymous*

**Math word problem**

A fire and rescue squads places a 15 ft ladder against a burning building. If he ladder is 9ft from the building how far up will the ladder reach? I got 17.5 ft Is that right?
*February 19, 2013 by Marco*

**physics**

A ladder of mass 34.4 kg and length 3.36 m is leaning against a wall at an angle θ. The coefficient of static friction between ladder and floor is 0.326; assume that the friction force between ladder and wall is zero. What is the maximum value that θ can have before ...
*April 6, 2011 by Anonymous*

**physics**

A ladder of mass 39.0 kg and length 3.18 m is leaning against a wall at an angle θ. The coefficient of static friction between ladder and floor is 0.298; assume that the friction force between ladder and wall is zero. What is the maximum value that θ can have before ...
*April 10, 2011 by I need help*

**phsyical science**

compare an atoms structure to a ladder. what parts of the ladder correspond to the energy levels of the atom/ identify one way a real ladder is not a good model for an atom.
*October 15, 2008 by taylor*

**Physics**

A 30-kg uniform ladder 12 m long is leaning against a frictionless wall at an angle of 50 degrees above the horizontal. A 45-kg boy climbs 5.0 m up the ladder. What is the magnitude of the force exerted by the ladder on the wall?
*November 4, 2013 by shaun*

**Geometry**

I am leaning a ladder against a wall. The ladder is 18 ft long, and I place the bottem of the ladder away from the wall, forming a 48° angle. How far away is the bottem of the ladder from the wall?
*March 20, 2012 by Anonymous*

**Calculus**

A 15 ft ladder is placed against a vertical wall. the bottom of the ladder is sliding away from the wall at a rate of 2 ft/sec. How fast is the top of the ladder sliding down the wall when the bottom of the ladder is 9 ft from the wall?
*February 28, 2013 by Trevor*

**math(Please help!!!)**

A ladder is leaning against a house and is forming a 60 degree angle with the ground. If the top of the ladder is 18 feet off of the ground, how long is the ladder? Leave your answer in exact form.
*November 4, 2008 by Abbey*

**geometry**

a ladder is 15 ft long and is leaning against the wall. the top of the ladder is 12 feet above the ground. find the distance from the bottom of the ladder to the wall. draw and label a picture and show work....
*March 20, 2012 by rob*

**Physics**

A uniform ladder of mass m = 6.5 kg and length l = 2.1 m leans at an angle against a frictionless wall, Fig. 12-72. If the coefficient of static friction between the ladder and the ground is µs = 0.3, what is the minimum angle at which the ladder will not slip?
*March 15, 2014 by Anonymous*

**calculus**

A ladder 10 ft long rests against a vertical wall. let θ be the angle between the top of the ladder and the wall and let x be the distance from the bottom of the ladder to the wall. If the bottom of the ladder slides away from the wall, how fast does x change with respect...
*October 7, 2010 by Sasha*

**math**

A ladder 10 ft long rests against a vertical wall. let θ be the angle between the top of the ladder and the wall and let x be the distance from the bottom of the ladder to the wall. If the bottom of the ladder slides away from the wall, how fast does x change with respect...
*October 7, 2010 by Sasha*

**Physics**

Romeo takes a uniform 15.0-m ladder and leans it against the smooth (frictionless) wall of the Capulet residence. The ladder's mass is 20.2 kg and the bottom rests on the ground 3.07 m from the wall. When Romeo, whose mass is 70 kg, gets 93.2 percent of the way to the top, the...
*February 19, 2012 by Jerry*

**CALCULUS**

A 25 ft ladder is leaning against a vertical wall. At what rate (with respect to time) is the angle theta between the ground and the ladder changing, if the top of the ladder is sliding down the wall at the rate of r inches per second, at the moment that the top of the ladder ...
*March 29, 2012 by Anonymous*

**physics**

Romeo takes a uniform 13.7-m ladder and leans it against the smooth (frictionless) wall of the Capulet residence. The ladder's mass is 23.2 kg and the bottom rests on the ground 3.43 m from the wall. When Romeo, whose mass is 70 kg, gets 88.3 percent of the way to the top, the...
*February 15, 2013 by Nick*

**physics**

Romeo takes a uniform 13.7-m ladder and leans it against the smooth (frictionless) wall of the Capulet residence. The ladder's mass is 23.2 kg and the bottom rests on the ground 3.43 m from the wall. When Romeo, whose mass is 70 kg, gets 88.3 percent of the way to the top, the...
*February 17, 2013 by Nick*

**Math**

A ladder 20 ft long rests against a vertical wall. Let \theta be the angle between the top of the ladder and the wall and let x be the distance from the bottom of the ladder to the wall. If the bottom of the ladder slides away from the wall, how fast does x change with respect...
*April 28, 2010 by Jennifer *

**Math**

A ladder 20 ft long rests against a vertical wall. Let \theta be the angle between the top of the ladder and the wall and let x be the distance from the bottom of the ladder to the wall. If the bottom of the ladder slides away from the wall, how fast does x change with respect...
*April 28, 2010 by Jennifer *

**math**

A ladder 14 ft long rests against a vertical wall. Let \theta be the angle between the top of the ladder and the wall and let x be the distance from the bottom of the ladder to the wall. If the bottom of the ladder slides away from the wall, how fast does x change with respect...
*May 3, 2010 by peter*

**calculus**

A ladder 14 ft long rests against a vertical wall. Let \theta be the angle between the top of the ladder and the wall and let x be the distance from the bottom of the ladder to the wall. If the bottom of the ladder slides away from the wall, how fast does x change with respect...
*May 3, 2010 by peter*

**Math**

A building 24 m tall is viewed from the top and bottom of a vertical ladder.The building forms an angle of 45 degrees with the top of the ladder and an angle of 60 degrees with the bottom of the ladder.Find (i) the height of the vertical ladder (ii) the distance between the ...
*July 15, 2009 by Anonymous*

**Math **

As part of a training exercise, 16 firemen need to carry equipment up a ladder hooked to the top of an office building that is 15 meters tall. If the base of the ladder is 7 meters from the wall, about how long is the ladder?
*May 2, 2012 by askaaska*

**physics**

) A uniform ladder of mass m and length leans at an angle against a frictionless wall. If the coefficient of static friction between the ladder and the ground is determine a formula for the minimum angle at which the ladder will not slip.
*November 6, 2013 by emy*

**calculus**

A 20 ft ladder is leaning against the side of a house. If the bottom of the ladder is moving away from the house at the rate of 2 feet per second, how fast is the top of the ladder moving down the wall when the bottom of the ladder is 12 feet from the house
*March 16, 2011 by Diana*

**physics**

A uniform ladder of mass m and length L leans at an angle θ against a frictionless wall. If the coefficient of static friction between the ladder and the ground is 0.43, what is the minimum angle at which the ladder will not slip? Do i use the equation Fn- Mg= 0
*January 17, 2011 by Sydney*

**Physics**

The Ladder is 5 m long and weighs 180N. The guy weighs 800N, and stops 1m horizontally up the ladder. The bottom of the ladder rest on a horizontal stone ledge at 53.1 degree. Find the normal and he frictional force at the base. HELP!!!
*November 3, 2013 by Anonymous*

**Physics**

The Ladder is 5 m long and weighs 180N. The guy weighs 800N, and stops 1m horizontally up the ladder. The bottom of the ladder rest on a horizontal stone ledge at 53.1 degree. Find the normal and he frictional force at the base. HELP!!!
*November 3, 2013 by Anonymous*

**Physics - PLEASE HELP**

A 25-kg uniform ladder 10-m is leaning against a frictionless wall. The ladder is making an angle of 32° to the ground. What is the magnitude of the total force exerted on the ladder by the ground? 675 N 462 N 245 N 543 N 314 N
*November 4, 2013 by shaun*

**Math**

Use the pythagorean Theorem to solve this problem. A painter places an 11 ft ladder against a house. The base of the ladder is 3 ft from the house. How high on the house does the ladder reach?
*April 28, 2011 by MathIsTheBest*

**caculus**

A 10-ft ladder rests against a vertical wall. If the bottom of the ladder slides away from the wall at a rate of 1 ft/sec, how fast, in ft/sec, is the top of the ladder sliding down the wall, at the instant when the bottom of the ladder is 6 ft from the wall? Answer with 2 ...
*December 17, 2014 by Anonymous*

**plane and spherical trigonometry**

a ladder 38 feet long is leaning against the side of a wall. if the angle between the ladder and the wall is 54 (degrees) approximately how far is the bottom of the ladder from the wall?
*July 8, 2013 by mhonic*

**Physics - Equilibrium**

A uniform ladder of mass M and length L leans at an angle theta against a frictionless wall. If the coefficient of static friction between the ladder and the ground is U, determine a formula for the minimum angle at which the ladder will not slip.
*April 18, 2008 by Nik*

**Physics**

A ladder 10-m long and weighing 50 N rests against a smooth vertical wall. If the ladder is just on the verge of slipping when it makes a 50 degree angle with the ground, find the coefficient of static friction between the ladder and the ground.
*May 7, 2010 by Stacey*

**physics**

a uniform ladder of mass m and length l leans against fricitonless wall angle theta. If the coefficient of static friction between the ladder and the ground is u, find the formula for the minimun angle such that the ladder won't slip
*November 30, 2012 by ashley*

**geometry**

a 30 foot ladder leaning against a vertical wall makes an angle of 81 degrees with the ground how far from the base of the pole is the surveyor?
*May 20, 2014 by taylor*

**Pythagorean Theorem**

A ladder resting against the side of a building reaches 32 ft up the building. If the ladder is 40 ft long, how far from the building is the base of the ladder?
*July 15, 2010 by david*

**algebra 1**

if you have a 10ft ladder placd leaning against the wall,and the ladder is 6ft from the wall.how high does the ladder reach on the wall?
*May 27, 2011 by tyyyyyy*

**Maths**

A ladder of length 6 m leans against a vertical wall so that the base of ladder is 2m from the wall. calculate the angle between the ladder and the wall.
*July 27, 2014 by faisal*

**physics**

An 77 person stands on a uniform ladder 4.0 long, that weighs 100 , as shown in the figure . The floor is rough; hence, it exerts both a normal force, , and a frictional force, , on the ladder. The wall, on the other hand, is frictionless; it exerts only a normal force, . the ...
*December 7, 2011 by bob*

**physics**

A glass cleaner of mass 95 kg places a 22 kg ladder against the wall.The ladder is 10 m long and rests on a wet floor with a coefficient of static friction equal to 0.40. What is the maximum length that the window cleaner can climb before the ladder slips?
*February 28, 2010 by Anonymous*

**physics**

A glass cleaner of mass 95 kg places a 22 kg ladder against the wall.The ladder is 10 m long and rests on a wet floor with a coefficient of static friction equal to 0.40. What is the maximum length that the window cleaner can climb before the ladder slips?
*February 28, 2010 by Jatinder*

**Physics**

A uniform ladder 10.0m long and weighing 50.0N rests against a smooth vertical wall. If the ladder is just on the verge of slipping when it makes a 50 degree angle with the ground, find the coefficient of static friction between the ladder and ground.
*October 24, 2012 by CM*

**Physics**

A ladder of mass 39.4 kg and length 2.88 m is leaning against a wall at an angle θ. The coefficient of static friction between ladder and floor is 0.282; assume that the friction force between ladder and wall is zero. What is the maximum value that θ can have before ...
*June 25, 2012 by James *

**Physics, need help only on part one.**

You are using a 5-m-long ladder to paint the exterior of your house. The point of contact between the ladder and the siding of the house is 4 m above the ground. The ladder has a mass of 18.0 kg. You weigh 56.6 kg and stand three-quarters of the way up the ladder. (a) ...
*October 25, 2011 by mymi*

**geometry**

a playground is 50yd by 50 yd amy walked across the playground from one corner to the opposite corner. how far did she walk? i got : 5000yd #2 a 70 ft ladder is mounted 10 ft above the ground on a fire truck. the bottom of the ladder is 40 ft from the wall of a building. the ...
*May 2, 2012 by marko*

**geometry**

A ladder is propped against a wall. If the top of the ladder reaches 18 feet up the wall and the base of the ladder is 6 feet from the base of the wall, how long is the ladder?
*January 25, 2011 by carolyn*

**physics**

A 150-kg ladder leans against a smooth wall, making an angle of 30 degrees with the floor. The centre of gravity of the ladder is one-third the way up from the bottom. How large a horizontal force must the floor provide if the ladder is not to slip?
*October 7, 2011 by lawrence*

**phy**

A 150-kg ladder leans against a smooth wall, making an angle of 30 degrees with the floor. The centre of gravity of the ladder is one-third the way up from the bottom. How large a horizontal force must the floor provide if the ladder is not to slip?
*August 13, 2014 by samson*

**physics**

a 700 newton man is able to climb up 4.5 meters on a 6 meters ladder before it slips. What must be the coefficient of friction be if the ladder is arranged so that it makes an angle 50 degrees with the ground? Assume the ladder to be uniform and weighing 450 newtons.
*September 23, 2014 by james*

**Calculus**

A 18 ft ladder leans against a wall. The bottom of the ladder is 4 ft from the wall at time t=0 and slides away from the wall at a rate of 3ft/sec. Find the velocity of the top of the ladder at time t=1. The velocity of ladder at time t=1 is __________ ft/sec.
*October 30, 2011 by Reonea*

**rpi**

For the stepladder shown in Fig. 12-51, sides AC and CE are each 3.34 m long and hinged at C. Bar BD is a tie-rod 0.662 m long, halfway up. A man weighing 746 N climbs 2.51 m along the ladder. Assuming that the floor is frictionless and neglecting the mass of the ladder, find...
*November 15, 2010 by Anonymous*

**math**

a 13 ft ladder is placed against a vertical wall of a building, with the bottom of the ladder stand on level ground 5ft from the base of the building. how high up the wall does the ladder reach.
*November 1, 2013 by pam*

**physics**

5m ladder leans against frictionless wall. point of contact is 4m above the ground. ladder has uniform mass of 15kg. determine forces by ground and the wall on the ladder
*January 23, 2015 by Anonymous*

**Math**

A ladder is placed against a wall, with its base 2 m from the wall. The ladder touches the top of a 2 m fence that is 1.5 m from the wall. How high up the wall does the ladder reach? Thanks for answering! Your help is greatly appreciated.
*September 4, 2011 by Jim*

**Math **

A 26ft ladder is placed against a vertical wall of a building, with the bottom of the ladder standing on level ground 24ft from the base of the building. How high up the wall does the ladder reach?
*November 2, 2013 by Pam*

**Geometry**

Need to use a ladder to reach a window that is 8 meters above the ground. The base of the ladder will be 6 meters from base of the building. How long must the ladder be?
*August 28, 2012 by Des*

**Math**

A firefighters ladder, 65 feet long, rests against a tall building. If the bottom of the ladder is 16 feet from the building, how high up the wall does the ladder reach.
*December 12, 2013 by Anonymous*

**Math**

Suppose there is a 10 meter ladder leaning against the wall of a building and the base of the ladder is sliding away from the building at a rate of 3 meters per second. How fast is the top of the ladder sliding down the wall when the base of the ladder is 8 meters from the wall?
*December 30, 2010 by Terra*

**Calculus **

A 15 ft ladder leans against a wall. The bottom of the ladder is 4 ft from the wall at time t=0 and slides away from the wall at a rate of 3ft/sec. Find the velocity of the top of the ladder at time t=2. The velocity of ladder at time t=2 is ........ft/sec.
*October 29, 2011 by saud*

**physics help!**

A uniform stationary ladder of length= 5.1 m and mass= 15 kg leans against a smooth vertical wall, while its bottom legs rest on a rough horizontal floor. The coefficient of static friction between floor and ladder is μ = 0.41. The ladder makes an angle θ = 51° with ...
*April 10, 2014 by Michelle*

**Calculus**

A 20' ladder leans against a building. The bottom of the ladder is sliding away horizontally at a rate of 2 feet per second. How fast is the top of the ladder sliding down the building when it is 12' above the ground?
*November 2, 2011 by Amy*

**Algebra**

The base of a ladder is 14 feet away from the wall. The top of the ladder is 17 feet from the floor. Find the length of the ladder to the nearest thousandth. length^2=14^2 + 17^2
*May 27, 2007 by Audrey*

**math**

A ladder 9.00 m long leans against the side of a building. If the ladder is inclined at an angle of 75.0° to the horizontal, what is the horizontal distance from the bottom of the ladder to the building?
*July 19, 2009 by melvin*

**physics**

A ladder 8.65 m long leans against the side of a building. If the ladder is inclined at an angle of 63.0° to the horizontal, what is the horizontal distance from the bottom of the ladder to the building?
*August 23, 2010 by Kayla*

**Math**

If a wall is 6th tall and a ladder is leaning against it. The ladder is 8th tall, how far apart is is the base of the ladder away from the wall?
*December 7, 2010 by Tiara*

**math**

A ladder leans against a wall four feet above the ground. The base of the ladder is three feet from the wall. How long is the ladder?
*March 9, 2011 by anonymous*

**geometry**

a ladder is placed against the side of a building at an angle of 50 degree. the ladder's base is 10ft away from the base of the building. How long is the ladder?
*February 28, 2012 by james*

**geometry**

The top of a ladder is leaning on a building at a point 12 feet above the ground; the bottom of the ladder is 5 feet from the base of the building. What is the length of the ladder?
*May 14, 2012 by Anonymous*

**physics**

A ladder 7.65 m long leans against the side of a building. If the ladder is inclined at an angle of 60.5° to the horizontal, what is the horizontal distance from the bottom of the ladder to the building?
*September 14, 2012 by kim*

**physics**

A ladder 7.65 m long leans against the side of a building. If the ladder is inclined at an angle of 72.5° to the horizontal, what is the horizontal distance from the bottom of the ladder to the building?
*September 1, 2013 by Amy*

**physics**

A 50 kg uniform ladder, 5.0 m long, is placed against a smooth wall at a height of h = 3.7 m. The base of the ladder rests on a rough horizontal surface whose coefficient of static friction is 0.40. An 80 kg block is suspended from the top rung of the ladder, just at the wall...
*October 29, 2012 by george *

**physics**

A 50 kg uniform ladder, 5.0 m long, is placed against a smooth wall at a height of h = 3.7 m. The base of the ladder rests on a rough horizontal surface whose coefficient of static friction is 0.40. An 80 kg block is suspended from the top rung of the ladder, just at the wall...
*November 16, 2012 by jenn*

**Calc.**

A ladder 25ft long is leaning against the wall of a house. The ladder is pulled away from the wall at a rate of 2 ft per second. How fast is the top of the ladder moving down the wall when its base is 7ft from the wall?
*November 1, 2010 by Preston*

**MATH**

The bottom of the ladder on a horizontal flat surface rests against a wall. It makes an angle of elevation of 35°. The bottom of the ladder is 42 ft from the base of the wall. How long is the ladder? Round your answer to the nearest whole number.
*May 9, 2013 by Rich*

**College Physics**

A uniform stationary ladder of length= 5.1 m and mass= 15 kg leans against a smooth vertical wall, while its bottom legs rest on a rough horizontal floor. The coefficient of static friction between floor and ladder is μ = 0.41. The ladder makes an angle θ = 51° with ...
*April 11, 2014 by Michelle*

**physics**

A uniform 250 N ladder rests against a perfectly smooth wall, making a 35 degree angle with the wall. (a)Draw a free body diagram of the ladder. (b) Find the normal forces that the wall and the floor exert on the ladder. (c) What is the friction force on the ladder at the ...
*November 9, 2009 by collegekid*

**Physics**

A house painter stands 3 m above the ground on a 5.3-m-long ladder that leans against the wall at a point 4.7 m above the ground. The painter weighs 638 N and the ladder weighs 143 N. Assuming no friction between the house and the upper end of the ladder, find the force of ...
*March 17, 2012 by Keith*

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