A car stars from rest on a half kilometer long bridge.the cofficient of friction between tyre and road os 0.1.Show that one can not drive through the bridge in less than 10s
manoj jangra , 15 Years ago
Grade 12
1 Answers
Ramesh V
Last Activity: 15 Years ago
friction force<u.N u=coeff of frivtion
N=mg whr m is mass of car
so ma=mg , a<0.1*g
s<0.5*.1*g*t2
t2>2*1*500
t > 31.6 sec
so,it cant drive bridge in 10 sec
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regards
Ramesh
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