- Plzzz Help With C D E Give A Detailed Solution 1 (243.46 KiB) Viewed 11 times
length of this spring. c) A 15 m long rope, with a mass of 20 kg, is lying on the ground. One end of the rope is lifted, vertically. a) Find the work done in lifting the end of the rope to a height of 10 m. Find the work done in lifting the end of the rope to a height of 20 m. b) d) A water tank has the shape resulting from revolving the region bounded by the curves y = x² and y = 9 about the y-axis. This tank is filled to a depth of 7 m. Find the work done in pumping all of the water (density = 1000 kg/m³) out over the rim of the tank. e) A spherical tank, of radius 5 m, is situated so that its bottom is 2 m above ground. Oil with a density of 900 kg/m³ fills the tank completely. Find the work done by gravity in emptying the tank through a pipe at the bottom of the tank that extends to ground level.