An object is moving on a circular track of radius 450, m . At some instant, object is moving at 30,

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3-2.Motion in Plane

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An object is moving on a circular track of radius $450\, m$. At some instant, the object is moving at $30\, m/s$ and gaining speed at a uniform rate of $2 m/s^2$. Its acceleration at this instant is nearly .......... $m/s^2$

A$1.6$

B$0.8$

C$2.8$

D$3.4$

Solution

$\mathrm{a}=\sqrt{\mathrm{a}_{\mathrm{c}}^{2}+\mathrm{a}_{\mathrm{t}}^{2}}=\sqrt{\left(\frac{\mathrm{V}^{2}}{\mathrm{r}}\right)^{2}+\mathrm{a}_{\mathrm{t}}^{2}}$
$a=\sqrt{\left(\frac{900}{450}\right)^{2}+(2)^{2}}=2.8 \mathrm{m} / \mathrm{s}^{2}$

Standard 11

Physics

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(AIIMS-2009)

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hard

An object is moving on a circular track of radius $450\, m$. At some instant, the object is moving at $30\, m/s$ and gaining speed at a uniform rate of $2 m/s^2$. Its acceleration at this instant is nearly .......... $m/s^2$

Solution

Similar Questions

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