Home
Class 11
PHYSICS
The angular speed of rotation of the ea...

The angular speed of rotation of the earth is

A

`7.3xx10^(-5) rad s^(-1)`

B

`7.3xx10^(-4) rad s^(-1)`

C

`7.3xx10^(-6) rad s^(-1)`

D

`7.3xx10^(-3) rad s^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
A
(a) The earth rotates from west to east in 24 hours
`:. T=24 " hours" =24xx3600s=86400 s`
Its angular speed is
`omega=(2pi)/(T)=(2pi)/(86400)=7.3xx10^(-5) "rad"s^(-1)`
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • GRAVITATION

    NCERT FINGERTIPS|Exercise Higher Order Thinking Skills|10 Videos

  • GRAVITATION

    NCERT FINGERTIPS|Exercise NCERT Exemplar|8 Videos

  • GRAVITATION

    NCERT FINGERTIPS|Exercise Weightlessness|2 Videos

  • KINETIC THEORY

    NCERT FINGERTIPS|Exercise Assertion And Reason|10 Videos

Similar Questions

Explore conceptually related problems

Find the angular speed of rotation of the Earth so that bodies on the equator would feel no weight .

Calculate the angular speed of rotation of the Earth so that the apparent g at the equator becomes half of its value at the surface. Also calculate the length of the day in this situation.

Knowledge Check

  • The speed of rotation of the earth is

    A
    25 km/sec
    B
    31 km/sec
    C
    39.5 km/sec
    D
    9.72 km/sec

  • The angular speed of rotation of earth about its axis at which the weight of man standing on the equator becomes half of his weight at the poles is given by

    A
    `0.034 rad s^(-1)`
    B
    `8.75 xx 10^(-4) rad s^(-1)`
    C
    `1.23 xx 10^(-2) rad s^(-1)`
    D
    `7.65 xx 10^(-7) rad s^(-1)`

  • The acceleration due to gravity at the latitude 45^(@) on the earth becomes zero if the angular velocity of rotation of the earth is

    A
    `sqrt(2/(gR))`
    B
    `sqrt(2gR)`
    C
    `sqrt((2g)/R)`
    D
    `sqrt((5R)/2)`

    • Similar Questions

    Explore conceptually related problems

    Is the angular speed of rotation of hour hand of a watch greater or smaller than the angular speed of earth's rotation about its axis ?

    Show that the object lying at the equator will fly off the surface of earth, if the speed of rotation of the earth increase seventeen times its present speed.

    A man standing on the equator feels that he is completely weightless. For this the angular of rotation of the earth about its axis, must be

    If omega is the angular velocity of rotation of the earth about its axis and R is radius of the earth, to decrease the weight of a body near the equator by 40% , then the new angular speed should be

    If the angular speed of rotation of an armature of alternating current generator is doubled, the induced emf will be

    Home
    Profile