The kinetic frictional force:
The normal force:
The sum of horizontal forces on A is:
ΣFA = T - fA
0 = T - μkmAg
The sum of horizontal forces acting on B:
ΣFB = WB - T
0 = WB - T = mBg - T
Consider the system shown in the figure (Figure 1). Block A weighs 46.9 N and block B weighs 30.1 N.Once block B is set into downward motion, it descends at a constant speed.
a.) Calculate the coefficient of kinetic friction between block A and the tabletop.
b.) A cat, also of weight 46.9 N, falls asleep on top of block A. If block B is now set into downward motion, what is its acceleration magnitude?
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