A cable that weighs 3 lb/ft is used to lift 700 lb of coal up a mine shaft 450 ft deep. Find the work W done.Approximate the required work by a Riemann sum.72lim 3r;ArW =i=172W = lim )3.x; Ax + 700 - 450i=1723W = lim >5Ti=172W = lim 3r; Axi=1723W = lim5t;Ar+ 700 .450i=1Express the work as an integral.r450W =3rdr•4503x²dxW =450 3W =I zrdr + 700 - 450450 3W =xdx450W =3.xd.x + 700 .450Evaluate the integral.W =ft-lb

A cable that weighs 3 lb/ft is used to lift 700 lb of coal up a mine shaft 450 ft deep. Find the work W done. Approximate the required work by a Riemann sum. W = lim > 3r;Ar i=1 W = lim )3.r;Ax + 700 · 450 i=1 72 W = lim 5r2 i-1 W = lim 3x;*Ar i=1 3 W = lim >-x;Ax+700 · 450 i=1 Express the work as an integral. 450 W = 3rdr 450 3 W = •450 3 W = I zrdr + 700 . 450 C450 3 xdr W = »450 W = 3rdr + 700 · 450 Evaluate the integral. | ft-lb W =

A cable that weighs 3 lb/ft is used to lift 700 lb of coal up a mine shaft 450 ft deep. Find the work W done. Approximate the required work by a Riemann sum. W = lim > 3r;Ar i=1 W = lim )3.r;Ax + 700 · 450 i=1 72 W = lim 5r2 i-1 W = lim 3x;*Ar i=1 3 W = lim >-x;Ax+700 · 450 i=1 Express the work as an integral. 450 W = 3rdr 450 3 W = •450 3 W = I zrdr + 700 . 450 C450 3 xdr W = »450 W = 3rdr + 700 · 450 Evaluate the integral. | ft-lb W =

Mathematics For Machine Technology

8th Edition

ISBN:9781337798310

Author:Peterson, John.

Publisher:Peterson, John.

Chapter39: Symbolism And Algebraic Expressions

Section: Chapter Questions

Problem 5A

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