Part A

Blocks $A_1,B$ and $C$ in $($Figure $1)$ have weights of $55N,$

$35N,$ and $10N,$ respectively.

Determine the smallest horizontal force $P$ that will cause impending motion. The coefficient of static friction between A and

${}_s=0\mathrm{.}3,$ between $B$ and $C,{}_s^{\text{'}}=0\mathrm{.}4,$ and between block $C$ and the ground, ${}_s^{\text{'}\text{'}}=0\mathrm{.}35.$

Express your answer to three significant figures and include the appropriate units.

$P=$

Request Answer

Figure

$1$ of $1$