## Essential University Physics: Volume 1 (3rd Edition)

a) $F=42,183 \ N$ b) $F=28,423 \ N$ c) $F=55,943 \ N$ d) $F=42,183 \ N$ e) $F=28,423 \ N$
We use Newton's Second Law to find: a) $F=mg=(4300)(9.81)=42,183 \ N$ b) $F=m(a+g)=(4300)(-3.2+9.81)=28,423 \ N$ c) $F=m(a+g)=(4300)(3.2+9.81)=55,943 \ N$ d) $F=mg=(4300)(9.81)=42,183 \ N$ e) $F=m(a+g)=(4300)(-3.2+9.81)=28,423 \ N$