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Consider the following figure. Assume the strings and pulleys have negligible mass. If the system is accelerating with g/6 m/s2 acceleration, calculate the friction force in between the table and the box.

Question 4

1g
2g
4g
Where g is the acceleration of gravity
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Equations of motion on 3 kg block is 3g - T1 = 3g/6

On 2kg block is = T1-f - T2 = 2g/6

On 1 kg block is T2 - g = g/6

Solving T1 = 5g/2, T2 = 7g/6 f = g = 9.8N
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