(a) Suppose the coefficient of kinetic friction betweenmA and the plane is uk= 0.15, and that mA = m

(a) Suppose the coefficient of kinetic friction between
mA and the plane in Fig. 5-38 is uk = 0.15, and that
rnA = rnB = 2.7 kg. As mB moves down, determine the
magnitude of the acceleration of mA and mB, given
0= 34°. (b) What smallest value of uk will keep the system
from accelerating?

[xflamer]

You don't get this enough but it baffles me how you don't have more subscribers when your videos are really helpful. Thank you 🙏🏾

[breanahernandez]

When you’re creating direction for acceleration, can’t you consider down as a positive because that’s the direction the block is moving. Sometimes that’s what we consider

[danielamoreno]

Thank you so much! You are saving my semester❤

[kamilkennyken]

8:10 Shouldn't sum of Forces equal negative ma? If yes. why?