The radius of a driving wheel of a car is 100cm. then to keep speed 60 km/hr. how many approx revolution per min must wheel make
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heya...!!!
given that:-
radius = 100cm
circumference = 2πr
=> 2×22/7×100
=> 44/7 × 100
=> 4400/7 cm
now,
Distance covered by the wheel in one minute
=> (60 × 1000 × 100)/60 = 100000cm
Number of revolutions in one minute
=> 100000/4400/7
=> 700000/4400
=> 159.09(approx.)
given that:-
radius = 100cm
circumference = 2πr
=> 2×22/7×100
=> 44/7 × 100
=> 4400/7 cm
now,
Distance covered by the wheel in one minute
=> (60 × 1000 × 100)/60 = 100000cm
Number of revolutions in one minute
=> 100000/4400/7
=> 700000/4400
=> 159.09(approx.)
rishilaugh:
great thanks sir
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