AP Physics 1· difficulty 4/5
A 2.0 kg block sits atop a 5.0 kg block on a frictionless floor. Static friction between blocks is . What is the maximum horizontal force on the bottom block such that the top block does not slide? Use .
19.6 N
39.2 N
13.7 N
27.4 N
Explanation
Top block accelerates only via friction: . The system has total mass 7.0 kg, so .
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