Question
A position dependent force $F=7-2 x+3 x^{2} \mathrm{~N}$ acts on a small body of mass $2 \mathrm{~kg}$ and displaces it from $x=0$ to $x=5 \mathrm{~m}$. The work done in joule is(a) 70(b) 270(c) 35(d) 135
Step 1
In this case, the force is a function of position, $F=7-2x+3x^{2}$, and the displacement is from $x=0$ to $x=5$ m. Show more…
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A position-dependent force $F=7-2 x+3 x^{2} N$ acts on a small body of mass $2 \mathrm{~kg}$ and displaces it from $x=0$ to $x=5 \mathrm{~m} .$ The work done in joule is (A) $70 \mathrm{~J}$ (B) $270 \mathrm{~J}$ (C) $35 \mathrm{~J}$ (D) $135 \mathrm{~J}$
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Round 1
A force $\mathrm{F}=\left(7-2 x+3 x^{2}\right) \mathrm{N}$ applied on a $2 \mathrm{~kg}$ mass which displaces it from $x=0$ to $x=5 \mathrm{~m}$. Work done in joule is: (a) $70 \mathrm{~J}$ (b) $270 \mathrm{~J}$ (c) $35 \mathrm{~J}$ (d) $135 \mathrm{~J}$
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Work, Energy, and Power
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