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?

1. 👍 0
2. 👎 0
3. 👁 118
1. 50 * 200 *cos85 = 872 ft-lb

1. 👍 0
2. 👎 0
posted by drwls

Similar Questions

1. physics

The torques acting on the crane boom can be computed about anaxis passing through the top of the boom. (this is the place wherethe spring scale and mass hanger connect to the boom) apply thesecond condition for equilibrium to the

asked by Anna on November 28, 2012
2. Physics

Fig.19 shows a crane lifting a car of mass 850 kg at constant velocity through a height of 12m in a time of 40s. The crane has a working efficiency of 60%. i) Calculate the tension in the lifting cable (in N) ii) Calculate the

asked by cake on November 14, 2017
3. Physics

The boom of a crane is 20 m long and is inclined 20ᵒ from the horizontal. A bucket of cement with a mass of 3000 kg is suspended from the upper end of the boom. What is the torque acting on the point where the boom is attached

asked by Tom on November 13, 2012
4. Acc

A crane with the mass of 500kg,lifting an object of the mass of 50kg, what wil be the gravitational potential energy of a crane?. I need the equation and the answear.

asked by Thapelo on February 24, 2011
5. 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?

asked by tionne on November 13, 2012
6. 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

asked by sandhya on December 3, 2009
7. 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.

asked by sam on February 20, 2011
8. math

a overhead gantry crane that is equiped whith a crane and hook block and reeved with 6 parts of line is lifting 12 tons what is the load on the haul line A.2000lbs B.6000lbs C.8000lbs D.4000lbs please show the formula

asked by jamie on September 27, 2010
9. 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

asked by daya on September 12, 2016
10. 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

asked by layton on August 14, 2014

More Similar Questions