The wheel of a motor cycle is of radius \[35\] cm. How many revolutions per minute must the wheel make so as to keep a speed of \[66\] km/h?

Home » The wheel of a motor cycle is of radius cm. How many revolutions per minute must the wheel make so as to keep a speed of km/h?

The wheel of a motor cycle is of radius

$35$

cm. How many revolutions per minute must the wheel make so as to keep a speed of

$66$

km/h?

The wheel of a motor cycle is of radius

$35$

cm. How many revolutions per minute must the wheel make so as to keep a speed of

$66$

km/h?

From the question Radius of wheel = r =

$35$

cm

We know that one revolution of the wheel is equal to Circumference of the wheel

i.e.,

$2\pi r$

=

$2\times (22/7)\times 35$

=

$220$

cm

But, from the question it is given that,

Speed of the wheel is

$66$

km/hr

=

$(66\times 1000\times 100)/60$

cm/min

=

$110000$

cm/min

∴ Number of revolutions in one min =

$110000/220=500$

Therefore,

$500$

revolutions per minute should be made by the wheel make so as to keep a speed of

$66$

km/h

i

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