To lift a load of 100 n a distance of 1 m an effort of 25 n must be applied over an inclined plane of length 4 m. what must be done to lift the load 2 m, using the same effort? a) use an inclined plane of length 8 m. b) use an inclined plane of length 2 m. c) use an inclined plane of length 10 m. d) use an inclined plane of length 16 m.

Aleaky 10-kg bucket is lifted from the ground to a height of 15 m at a constant speed with a rope that weighs 0.7 kg/m. initially the bucket contains 45 kg of water, but the water leaks at a constant rate and finishes draining just as the bucket reaches the 15-m level. find the work done. (use 9.8 m/s2 for g.) show how to approximate the required work by a riemann sum. (let x be the height in meters above the ground. enter xi* as xi.) lim n → ∞ n (9.8)(45−3 xi) i = 1 δx express the work as an integral. 0 dx evaluate the integral. (round your answer to the nearest integer.) j