Find the minimum hanging mass m so that the 10 kg block moves up the 37° inclined plane in the shown arrangement.

Question

G1 Physics · Accepted Answer

At the limiting condition for upward motion of the 10 kg block, tension must balance the downslope component of weight plus the limiting friction. Using the geometry of the connected 30° smooth side and the 37° side gives the source result m = 20 kg.