Question

kriday moves in a circular track of radius of 12 m .if he complete two and half revolution along the circular track,then find the distance and displacement covered by him​

Answer 1

Explanation:

Figure:-

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• Firstly we have to find circumference .
• Because the particle moving around a circular track .

Radius=r=12m

$\boxed{\sf Circumference=2πr}$

$\\ \tt {:}\Rrightarrow 2\times \dfrac{22}{7}\times 12$

$\\ \tt {:}\Rrightarrow \dfrac{44\times 12}{7}$

$\\ \tt {:}\Rrightarrow \dfrac{528}{7}$

$\\ \tt {:}\Rrightarrow 75.4$

$\\ \tt {:}\Rrightarrow 75m (Approx)$

Now ,

Distance traveled=2.5×Circumference

$\\ \tt {:}\Rrightarrow 2.5\times 75$

$\\ \tt {:}\Rrightarrow 187.5m$

And,

Displacement=2×Radius

$\\ \tt {:}\Rrightarrow 2×12$

$\\ \tt {:}\Rrightarrow 24m$