A heavy rope , 60 ft long, weighs 0.5 lb/ft and hangs over the edge of a
Fantastic news! We've Found the answer you've been seeking!
Question:
A heavy rope, 60 ft long, weighs 0.5 lb/ft and hangs over the edge of a building 130 ft high.
(a) How much work W is done in pulling the rope to the top of the building?Show how to approximate the required work by a Riemann sum. (Enter xi* as xi.)
dx
Evaluate the integral.W = ft-lb
W = lim n?
Express the work as an integral.| n |
|
||
 | |||
| i = 1 |
W =
dxEvaluate the integral.W = ft-lb(b) How much work W is done in pulling half the rope to the top of the building? Show how to approximate the required work by a Riemann sum. (Enter xi* as xi.) |
| 0 |
W = lim n?
Express the work as an integral.| n |
|
||
 | |||
| i = 1 |
W =
 |
| 0 |
 |
 |
Expert Answer:
Related Book For 
Posted Date:
