The figure below shows a block of mass 2 kg sitting on top of another block of mass 5 kg which rests on a frictionless horizontal surface. The coefficient of static friction between the two blocks is µs. A horizontal force F of magnitude 21 N is applied to the 5 – kg block. Find the minimum value of µs such that the two blocks accelerate together without slipping. (Hint: first find the common acceleration of the two blocks.) - 2 kg 5 kg →F

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The figure below shows a block of mass 2 kg sitting on
top of another block of mass 5 kg which rests on a
frictionless horizontal surface. The coefficient of static
friction between the two blocks is us. A horizontal force
F of magnitude 21 N is applied to the 5 – kg block.
Find the minimum value of us such that the two blocks
accelerate together without slipping. (Hint: first find
the common acceleration of the two blocks.)
2 kg
5 kg
>F
Transcribed Image Text:The figure below shows a block of mass 2 kg sitting on top of another block of mass 5 kg which rests on a frictionless horizontal surface. The coefficient of static friction between the two blocks is us. A horizontal force F of magnitude 21 N is applied to the 5 – kg block. Find the minimum value of us such that the two blocks accelerate together without slipping. (Hint: first find the common acceleration of the two blocks.) 2 kg 5 kg >F
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