Part A The mobile crane s symmetrically supported by two outriggers at A and two at B in order to relieve the suspension of the truck upon which it rests and to provide greater stability. The crane and truck have a center of mass at G₁ and the boom has a center of mass at G₂. The boom is supporting a load. Draw the free-body diagram for the crane and boom according to lecture instructions. Draw the vectors starting at the black dots. The location and orientation of the vectors will be graded. The length of the vectors will not be graded. 0 W crane weight of lower part of the crane W boom weight of the boom Fload force excerted by load FA reaction at A FB reaction at B 2m 1m 1m LIMI 6.25 m

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Free Body Diagram

The system of forces acting on a body tends to either rotate it or make the body undergo motion. In general, when an external agent exerts a force on a body, the body undergoes translational motion and rotational motion. The body has six degrees of freedom under the influence of that force. Here, three degrees of freedom are from the translational motion while the other three are from the rotation motion. However, sometimes the bodies are not allowed to undergo any motion and are fixed, under such conditions the body is said to be constrained.