Determine the maximum force P that can be applied without causing the 281 kg spo

Question

Determine the maximum force P that can be applied without causing the 281 kg spool to move.  The coefficient of static friction between all surfaces is ?s = 0.15.  Be sure to include units in newtons as part of your answer!

Note:  Be sure to convert mass to force.

Determine the maximum force P that can be applied without causing the 281 kg spool to move. The coefficient of static friction between all surfaces is ?s = 0.15. Be sure to include units in newtons as part of your answer! Note: Be sure to convert mass to force.

Explanation / Answer

maximum friction at B = 0.15P

P*250 = F*450 + 0.15P*450

F + 0.15P = 0.455P

F = 0.605P

Max friction at A = 281*9.8*0.15 - 0.15P = F = 0.605P

P = 281*9.8*0.15/(0.605+0.15) = 547.11N

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