# Hypothetical potential energy curve for aparticle of mass m If the particle is released from rest at position r0, its speed atposition 2r0, is most ne

Hypothetical potential energy curve for aparticle of mass m
If the particle is released from rest at position r0, its speed atposition 2r0, is most nearly
a) ${\left(\frac{8Uo}{m}\right)}^{1}\left\{/2\right\}$
b) ${\left(\frac{6Uo}{m}\right)}^{\frac{1}{2}}$
c) ${\left(\frac{4Uo}{m}\right)}^{\frac{1}{2}}$
d) ${\left(\frac{2Uo}{m}\right)}^{\frac{1}{2}}$
e) ${\left(\frac{Uo}{m}\right)}^{\frac{1}{2}}$
if the potential energy function is given by
$U\left(r\right)=b{r}^{P}-\frac{3}{2}\right\}+c$
where b and c are constants
which of the following is an edxpression of the force on theparticle?
1) $\frac{3b}{2}\left({r}^{-\frac{5}{2}}\right)$
2) $\frac{3b}{2}\left\{3b\right\}\left\{2\right\}\left({r}^{-\frac{1}{2}}\right)$
3) $\frac{3b}{2}\left\{3\right\}\left\{2\right\}\left({r}^{-\frac{1}{2}}\right)$
4) $2b\left({r}^{-\frac{1}{2}}\right)+cr$
5) $\frac{3b}{2}\left\{2b\right\}\left\{5\right\}\left({r}^{-\frac{5}{2}}\right)+cr$
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