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Statics question involving moments and cranes

by hockeyguy314
Tags: cranes, involving, moments, statics
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hockeyguy314
#1
Oct4-12, 02:12 AM
P: 3
1. The problem statement, all variables and given/known data

The crane below is on level ground. The x axis is through the contact points of the rearmost wheels with the ground, the y axis is parallel to the front-to-back centerline, and the z axis is vertical as shown. The bed (platform) of the crane is 3 ft above the ground. For practical purposes the pivot point of the bottom of the boom can be considered in the bed of the crane and 6 ft from the center of the cab. The center of the cab is on the centerline 15 ft forward (to the left) of the rearmost axle. The 50-ft boom makes an angle of 60 with the bed of the crane in a vertical plane, and the cab and boom are swiveled 45 horizontally from the fore and aft centerline of the truck bed. The distance between the contact points of the rear wheels is considered to be 8 ft. Determine the turning moment of the 4000-lb load about the x axis.
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pongo38
#2
Oct4-12, 01:21 PM
P: 699
What ideas do you have about this already? In this forum you have to show some effort before receiving help or hints.


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