In Fig. 5-35 the coefficient of static friction between mass mA and the table is 0.40, whereas the c

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In Fig. 5-35 the coefficient of static friction between mass mA and the table is 0.40, whereas the coefficient of kinetic friction is 0.30 (a) What minimum value of mA will keep the system from starting to move? (b) What value(s) of mA will keep the system moving at constant speed?
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Thank you for all of your videos, they really really help!

joanag
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cant u just divide 2kg / 0.4 to get 5kg?

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