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Engineering Mechanics - PKRB: Work and Energy - Discussion

Discussion Forum : PKRB: Work and Energy - General Questions (Q.No. 9)
PKRB: Work and Energy
9.

An 800-lb tree falls from the vertical position such that it pivots about its cut section at A. If the tree can be considered as a uniform rod, pin-supported at A, determine the speed of its top branch just before it strikes the ground.

vB = 69.5 ft/s
vB = 80.2 ft/s
vB = 139.0 ft/s
vB = 56.7 ft/s
Answer: Option
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