A bucket that weighs 6 lb and a rope of negligible weight are used to draw water from a well that is 50 ft deep. The bucket is filled with 36 lb of water and is pulled up at a rate of 2.5 ft/s, but water leaks out of a hole in the bucket at a rate of 0.25 lb/s. Find the work done in pulling the bucket to the top of the well. Show how to approximate the required...
The very of thood that flows in a blood vessel with radius R and length at a distance from the central axis is v/), where is the pressure difference between the end of the vessel and they (*) in the werage velocity we (with respect ton over the intervalo SSR Www Compare the serve are with the maximum velocity A cable that weighs 3 lb/ft is used to lift 550 lb of coal up a mine shaft 450 ft deep....
2. A chain weighing 2.3 lb/ft is used to lift a 1500 lb generator 250 ft to the roof of a building. [7pts] (a) How much work is done in the "fixed' part of the problem? (b) How much work is done in the variable' part of the problem? (c) What is the total amount of work done in this situation?
A bucket that weighs 5 lb and a rope of negligible weight are used to draw water from a well that is 80 ft deep. The bucket is filled with 36 lb of water and is pulled up at a rate of 2 ft/s, but water leaks out of a hole in the bucket at a rate of 0.2 lb/s. Find the work done in pulling the bucket to the top of the well. Show how to approximate the required...
(1 point) Book Problem 9 A heavy rope, 20 ft long, weighs 0.9 lb/ft and hangs over the edge of a building 130 ft high a) How much work is done in pulling the rope to the top of the building? Work ft-lb. a) How much work is done in pulling half the rope to the top of the building? Work ft-lb. (1 point) Book Problem 15 An aquarium 10m long, 5m wide, and 9m deep is full of water....
S. A 200 lb cable is loo ft long and hangs vertically from the top of a tall building. How much work is required to lift the cable to the top of the building?
9. A crane lifts a 2,000 lb load vertically 30 ft with a 1" cable weighing 1.68 lb/ft. (a) How much work is done lifting the cable alone? (b) How much work is done lifting the load alone? (c) Could one conclude that the work done lifting the ca- ble is negligible compared to the work done lifting the load? 9. A crane lifts a 2,000 lb load vertically 30 ft with a 1" cable weighing 1.68 lb/ft. (a) How...
A heavy rope, 40 ft long, weighs 0.8 lb/ft and hangs over the edge of a building 110 ft high. How much work is done in pulling the rope to the top of the building? 710ft-lb 730ft-lb 750ft-lb 740ft-lb 640 ft-lb
An electric elevator with a motor at the top has a multistrand cable weighing 4 lb/ft. When the car is at the first floor, 150 ft of cable are paid out, and effectively 0 ft are out when the car is at the top floor. How much work does the motor do just lifting the cable when it takes the car from the first floor to the top? The amount of work required is ft-lb. (Simplify your answer.)
How to solve? The uniform steel boom in Fig. 4-22a weighs 500 lb. It is supported by two cables CE and CD, and a ball-and-socket joint at A. The cable supporting the 1000-lb load passes over a small pulley at B. Find the tension in cable CE and in cabl-e CD 4 ft 12 ft 12 ft 6 ft ft 18 ft rted by cables .r The uniform steel boom in Fig. 4-22a weighs 500 lb. It is supported by...