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The wheel of a motorcycle is of 35cm. Ho...

The wheel of a motorcycle is of 35cm. How many revolutions per minute must the wheel make so as to keep a speed of `66km //hr`

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The correct Answer is:
500
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Knowledge Check

  • A wheel has a radius of 42cm. To cover a distance of 792m, the number of revolutions it makes is

    A
    350
    B
    400
    C
    300
    D
    270

  • A toothed wheel is rotated at 120 r.p.m and a post-card is placed aginest the teeth. How many teeth (frequency) must the wheel have to produce a note whse pitch is same as that of a tunning fork of frequency 256/ second ?

    A
    `256`
    B
    120
    C
    64
    D
    32

    • Similar Questions

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    The driving wheel of a locomative engine is 2.1 m in radius and it makes 75 revolutions per minute. Find the speed of the train in kmph.

    The diameter of a car wheel is 56cm. Calculate (a) the number of times the wheel rotates in travelling a distance of 1.056 km. (b) the speed of the car in kmph if its wheel covers 750 revolutions per minute.

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    A man stands on a rotating platform, with his arms stretched horizontally holding a 5 kg weight in each hand. The angular speed of the platform is 30 revolutions per minute. The man then brings his arms close to his body with the distance of each weight from the axis changing from 90cm to 20cm. The moment of inertia of the man together with the platform may be taken to be constant and equal to 7.6 kg m^(2) . (a) What is his new angular speed? (Neglect friction.) (b) Is kinetic energy conserved in the process? If not, from where does the change come about?

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