1–13

1–13 Solve Prob. 1–12 using EES (or other) software.
Print out the entire solution, including the
numerical results with proper units.
ANS
1-13 EES Problem1-12 isreconsidered. The entire EES solution istobe printed out, including the
numericalresultswithproper units.
Analysis The problemissolved using EES, and the solution isgiven below.
W=m*g"[N]"
m=5"[kg]"
g=9.79"[m/s^2]"
"The force balance on the rock yields the net force acting on the rock as"
F_net = F_up - F_down"[N]"
F_up=150"[N]"
F_down=W"[N]"
"The acceleration of the rock is determined from Newton's second law."
F_net=a*m
"To Run the program, press F2 or click on the calculator icon from the Calculate menu"
SOLUTION
a=20.21 [m/s^2]
F_down=48.95 [N]
F_net=101.1 [N]
F_up=150 [N]
g=9.79 [m/s^2]
m=5 [kg]
W=48.95 [N]