A horizontal force $F=38lb$ is applied to the $230-lb$ refrigerator as shown. The coefficient of kinetic friction at A and $B$ is ${}_k=0\mathrm{.}1.$ Assume that the refrigerator moves without tipping. $($ Figure $1)$

Part A

Determine the magnitude of the refrigerator's acceleration, $a_G.$

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

Part B

Determine the normal force exerted on the refrigerator by the floor at $A,N_A,$

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

Part C

Determine the normal force exerted on the refrigerator by the floor at $B,N_B.$

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