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3-2.Motion in Plane
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$72\;km/hr$ ની ઝડપથી કાર $10\,m$ ત્રિજયાના રોડ પર $P$ બિંદુએ સંપર્કબળ ....... $kN$ થાય. કારનું દળ $500\,kg$ છે.
A$25$
B$50$
C$75$
D$એકપણ$ નહી
Solution
$v = 72\frac{{km}}{h}\, = 20\,m/s, \,r = 10\,m, \,m = 500\,kg$
$R = mg + \frac{{m\,{v^2}}}{r}$
$\therefore R = 500 \times 10 + \frac{{500 \times {{(20)}^2}}}{{10}}$
$\therefore R = 25000\,N$$ = 25\,KN$
$R = mg + \frac{{m\,{v^2}}}{r}$
$\therefore R = 500 \times 10 + \frac{{500 \times {{(20)}^2}}}{{10}}$
$\therefore R = 25000\,N$$ = 25\,KN$
Standard 11
Physics
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