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Unformatted text preview: in accelerating a body ENGR 301 kg
m3
m.s 2 kg.m 2
or
s2 or J ENGR 301 Known weight of suitcase = m = 30 kg
change in elevation = ΔZ = 35 m Desired energy stored in suitcase
stored in suitcase Equation W = work done on suitcase = m g ΔZ
ΔE = W Solution = (30 kg)(9.81 m/s2)(35 m)
= 10300.5 kg.m2/s2 or J
= 10.3 kJ ENGR 301 That’s it for today. ENGR 301 • Read chapter 2, sections 2.6 – 2.8, before
chapter sections
before
next lecture. ENGR 301...
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 Spring '09
 Staff
 Dynamics

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