PROBLEM $2$: Two blocks shown are connected by a cord and rests on

horizontal planes. If the coefficient of friction for the $200N$ block is $0\mathrm{.}20$

and for the $300N$ block is $0\mathrm{.}30,$ determine the magnitude and direction

of the least force $P$ that will cause impending motion.

ANS: $P=120\mathrm{.}60N=11\mathrm{.}30$