A mechanic is reinstalling a newly-sharpened blade on a lawn mower. A wedged-in block of wood at C prevents the blade from rotating as the 20-lb force is applied to the wrench handle. The blade is bolted to a bracket attached to the motor shaft O, which protrudes through the bracket and blade. Determine the normal force at C. State any assumptions. Does it matter whether the bolt at B is installed? 4.9 20 lb Answer: Nc= 2.02.0 COOB 7.2 lb
A mechanic is reinstalling a newly-sharpened blade on a lawn mower. A wedged-in block of wood at C prevents the blade from rotating as the 20-lb force is applied to the wrench handle. The blade is bolted to a bracket attached to the motor shaft O, which protrudes through the bracket and blade. Determine the normal force at C. State any assumptions. Does it matter whether the bolt at B is installed? 4.9 20 lb Answer: Nc= 2.02.0 COOB 7.2 lb
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Transcribed Image Text:A mechanic is reinstalling a newly-sharpened blade on a lawn mower. A wedged-in block of wood at C prevents the blade from rotating
as the 20-lb force is applied to the wrench handle. The blade is bolted to a bracket attached to the motor shaft O, which protrudes
through the bracket and blade. Determine the normal force at C. State any assumptions. Does it matter whether the bolt at B is
installed?
4.9"
20 lb
Answer: Nc=
2.02.0
AfD OOB
7.2
lb
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