Please Answer All Three:

15. [-/1 Points] DETAILS SCALCET9 16.2.041.MI. MY NO Find the work done by the force field F(x, y) = xi + (y + 1) j in moving an object along an arch of the cycloid r(t) = (t - sin(t))i + (1 - cos(t))j, 0 s t s 2n. Need Help? Read It Watch It Master It Submit Answer 16. [-/1 Points] DETAILS SCALCET9 16.2.044. MY NOT The force exerted by an electric charge at the origin on a charged particle at a point (x, y, z) with position vector r = (x, y, z) is F(r) = where K is a constant. (See this example.) Find the work done as the particle moves along a straight line from (2, 0, 0) to (2, 2, 5). Need Help? Read It Submit Answer 17. [-/1 Points] DETAILS SCALCET9 16.2.047. MY NOT A 200-lb man carries a 10-lb can of paint up a helical staircase that encircles a silo with radius 25 ft. If the silo is 80 ft high and the man makes exactly four complete revolutions, how much work (in ft-lbs) is done by the man against gravity in climbing to the top? Ift-lbs Need Help? Read it Watch It Submit