Example 7.17 : A jet plane starts from rest at x = 0 and is
subjected to the acceleration shown in Fig. 7.8. Determine
the speed of the plane when it has travelled 60 m.
a in
m/s2
22.5
x in m
150
Answers
Answered by
1
Answer:
Dear student,
a=v\dfrac{dv}{dx} \implies \int_0^v vdv=\int_0^{60}adx- which is the area under the a-s curve.
Hence\dfrac{v^2}{2}=\dfrac{1}{2}\times ( sum of parallel sides)\times 60
\implies v^2=2\times \dfrac{1}{2}\times(22.5+13.5)\times 60
\implies v=46.47m/s
Explanation:
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