A truck has front wheel of radius 0.7m & its real wheel radius 1.4m .If the real wheel takes 500 revolutions to travel a certain distance how many revolutions must the front wheel have taken to cover the same distance also find the distance in their area.
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12
Complete revolution is equal to circumference of back wheel = 2 pi r = 2 x 3.14 x 1.4 = 8.8 m in one revolution..
In 500 revolutions = 500x8.8 = 4400m..
CIRCUMFERENCE of front wheel = 2 x 3.14 x 0.7 = 4.4m
For 4400m, it will take 4400/4.4 = 1000 revolutions.
Answered by
6
You con also solve it by unitary method
500 rev. 0.7
x 1.4
x = 500 × 1.4 /0.7
x = 1000
1000 revolutions
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