alleryA lever balances 240 N at a 0.3 m load arm and 1.2 m effort arm. What effort is required?
A60 N
B80 N
C120 N
D960 N
Answer & Solution
Correct answer: A. 60 N
MA = 1.2/0.3 = 4, so effort is 240/4 = 60 N.
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