AP Physics 1hardmcq1 pt
A 30 kg beam of length 4.0 m is supported at its ends. A 20 kg load sits 1.0 m from the left end. The support force at the left end is about (g = 10 m/s²)
A.350 N
B.300 N
C.200 N
D.500 N
Explanation
Core Concept
Torques about the right end: FL(4.0) = (200)(3.0) + (300)(2.0) = 1200 N·m, so FL = 300 N.
Correct Answer
B300 N
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