# Physics

posted by .

Crane A has 2.0 as much power as Crane B.

If Crane B can do 9492 Joules of work in 12.492 minutes, how many Joules of work can Crane A do in 12.492 minutes?

• Physics -

Does crane A and B have anything in common?

• Physics -

They are both using rope and pulley systems to lift a load from a truck to the top of a building

• Physics -

something is missing.

• Physics -

that's all that was given in the problem

• Physics -

P(A) = W(A)/t = 9492/12.492•60 = 12.66 W
P(B) = P(A)/2 = 6.33 W
W(B) = P(B) •t = 6.33•12.492•60 = 4946 W

## Similar Questions

1. ### physics

A 25 ft long crane supported at its lower end by a pin is elevated by a horizontal cable. A 250 lb load is suspended from the outer end of the crane. The center of gravity of the crane is 10 ft from the pin and the crane weighs 200 …
2. ### physics

A crane lifts a concrete hopper of mass 370 kg from the ground to the top of a 38 m building that is under construction. The hopper moves with a constant speed during the lift. The power rating of the crane motor is 8.2 kiloWatts. …
3. ### physics

A crane lifts a concrete hopper of mass 370 kg from the ground to the top of a 38 m building that is under construction. The hopper moves with a constant speed during the lift. The power rating of the crane motor is 8.2 kiloWatts. …
4. ### Physics

The arm of a crane at a construction site is 13.1 m long, and it makes an angle of 20° with the horizontal. Assume that the maximum load the crane can handle is limited by the amount of torque the load produces at the base of the …
5. ### Cranes

08/09/2005 Physics A crane is lifting a 200 pound object. The crane boom is 50 ft long. The boom forms an 85 degree angle with the horizontal. What is the torque applied to the crane boom?
6. ### physics

a magnetic crane left a mass 1500 through a vertical height of 40m.calculate the work done in operating the crane
7. ### Physics

crane lifts a 75 kg girder 8.85 m. How much work does the crane do lifting with an upward acceleration of 1.20 m/s ^2?
8. ### trigo

a crane at the edge of a dock is supported by a cable 15 meters long, attached to the dock 9 meters long from the base of the crane. if the crane is 6 meters long, what is the acute angle that the crane arm forms with the horizontal?
9. ### Trigonometry

A hinged crane which measures 19m makes an angle of 50° with the ground. A malfunction causes the lock on the hinge to fail and the top part (of 14.6m) of the crane swings down. How far from the base of the crane does the top hot …
10. ### algebra (check work)

a camera car with a crane is used to film a movie. the crane's max. height is 18ft and the min. height is 4ft. write a compound inequality that describes the possible heights of the crane. 18≥x≤4

More Similar Questions