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3-2.Motion in Plane
easy
જો એક પૈડું $2000$ ભ્રમણ માં $9.5\ km$ અંતર કાપ્તુ હોય તો પૈડાનો વ્યાસ કેટલો હોય ?
A
$1.5\,m$
B
$1.5\,cm$
C
$7.5\,m$
D
$7.5\,cm$
Solution
Distance covered by wheel in $1$ rotation = $2\pi r = \pi D$ (Where $D= 2r$ = diameter of wheel)
$\therefore $ Distance covered in $2000$ rotation = $2000$ $\pi D$= $9.5 \times {10^3}\ m$ (given)
$\therefore D = 1.5\,meter$
Standard 11
Physics