Lv 1100 points

# Mo

• ### Physics #9 The arm of a crane at a construction site is 14.0 m long, and it makes an angle of 40° with the horizontal. Assume that the maxi?

The arm of a crane at a construction site is 14.0 m long, and it makes an angle of 40° 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 arm.

(a) What is the magnitude of the maximum torque the crane can withstand if the maximum load the crane can handle is 460 N?

(b) What is the maximum load for this crane at an angle of 35° with the horizontal?

• ### Physics #6 The efficiency of a pulley system is 55 percent. The pulleys are used to raise a mass of 81 kg to a height of 4.6 m. What force ?

The efficiency of a pulley system is 55 percent. The pulleys are used to raise a mass of 81 kg to a height of 4.6 m. What force is exerted on the rope of the pulley system if the rope is pulled for 18 m in order to raise the mass to the required height?

• ### Physics #5 If the torque required to loosen a nut that holds a wheel on a car has a magnitude of 69 N·m, what force must be exerted a?

If the torque required to loosen a nut that holds a wheel on a car has a magnitude of 69 N·m, what force must be exerted at the end of a 0.47 m lug wrench to loosen the nut when the angle is 33°?

I am not really sure on how to get the answer, I currently have: 123.11