work done when pulling the chain to the top of the building

See attached file for full problem description.
A 100-ft length of steel chain weighing 15 lb/f is hanging from the top of a building. How much work is done in pulling all of the chain to the top of the building?

A 100 ft length of steel chain weighing 15 lb/ft is hanging from thetop of a tall building. How much work is done in pulling all of thechain to thetop of thebuilding?
keywords: integration, integrates, integrals, integrating, double, triple, multiple

Find the area of the surface obtained whenthe graph of y = x2, 0 ≤ x ≤ 1, is rotated around the y-axis.
Find the volume of the solid that is generated by rotating the region formed by the graphs of y = x2, y = 2, and x = 0 about the y-axis.
A 100-ft length of steel chain weighing 15 lb/ft is hanging

1. Express the distance between the point (3, 0) and the point P (x, y) of the parabola y = as a function of x.
2. Find a function f(x) = and a function g such that f(g(x)) = h(x) =
3. Find the trigonometric limit: .
4. Given , use the four step process to find a slope-predictor
function m(x). Then write an eq

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Discuss the performance chain as it applies to your organization or one with which you are familiar. Identify the key components and links of the performance chain within the organization. Is the performance chain effective?

A passenger is pulling on the strap of a 17.8 kg suitcase with a force of 68.9 N. The strap makes an angle of 35.7 degrees above the horizontal. A 38.6 N friction force opposes the motion of the suitcase. Calculate the acceleration of the suitcase.

A brick comes loose from near thetop of a building and falls such that its distance s (in feet) from the street (after t seconds) is given by the equation
s(t) = 200 - 16t^2
(see equation in attached file)
How fast is the brick falling after 2 seconds have passed?

A 50-kg sled is pulled 20 meters over ice at a constant speed. The coefficient of friction between the sled and the ice is 0.13.
A) What is the frictional force?
B) How much work is done in pullingthe sled 20 meters?

Anne is pulling on a 60 foot rope attached to thetop of a 48 foot tree while Walter is cutting the tree at its base. How far from the base of the tree is Anne standing?