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Free Body Diagram - - Detailed Example

Strategy for Construction of FBD to find the force in the lift cylinder, CD

Steps: 1. The "body" now includes the bucket + crowd cylinder, AB, + the lift

arm, ECF.

2. The surroundings include:

a. Gravitational attraction on the bucket

b. The lift cylinder, CD

c. The pin support at F

3. Show the effects of the surroundings on the "body"

They include the gravitational force on the bucket, the force of the lift

cylinder on the lift arm, and the pin forces at the support, F.

The FBD of the "body" is then: Note: ∑ M_F = 0 yields F_CD