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sudarshan gupta Grade: Upto college level
Two cars of unequal masses use similar tyres.If they are moving with at the same initial speed,the minimum stopping distance(a)is smaller for the heavier car(b)is smaller for the lighter car(c)is same for both cars(d)depends on the volume of the car
8 years ago

pratham ashish
9 Points
Hi,

Ans to ur Qn is(c)the distance is same for both cars

See how :

the friction force is mue*m1*g (mue = friction coeff.)
for other

the friction force is mue*m2*g (mue is same for both as both have same type
of tyres)
but retardetion due to friction

for I car = mue*m1*g/m1
= mue*g

for II car = mue*m2*g/m2
= mue*g

retardation is same for both , so time taken in stopping will also be same

As s = ut+ (at^2)/2

HAVE NICE LUCK

8 years ago
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