Home
Class 11
PHYSICS
A satellite revolves round a planet in a...

A satellite revolves round a planet in an elliptical orbit. Its maximum and minimum distance from planet are `1.5xx10^(7)` metre and `0.5xx10^(7)` metre respectively. If the speed of the satellite at the farthest point is `5xx10^(3)m//s`. Calculate the speed at the nearest point.

Text Solution

Verified by Experts

The angular momentum of the satellite about the planet is constant.

`thereforemv_(1)r_(1)=mv_(2)r_(2)`
(or) `v_(1)r_(1)=v_(2)r_(2)`
`therefore` Speed at nearest part
`v_(1)=(v_(2)r_(2))/(r_1)=(5xx10^(3)xx1.5xx10^(7))/(0.5xx10^(7))`
`therefore" "v_(1)=1.5xx10^(4)m//s`
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • GRAVITATION

    PREMIERS PUBLISHERS|Exercise OTHER IMPORTANT QUESTION & ANSWERS (CONCEPTUAL QUESTIONS)|34 Videos

  • GRAVITATION

    PREMIERS PUBLISHERS|Exercise OTHER IMPORTANT QUESTION & ANSWERS (LONG ANSWER QUESTIONS)|10 Videos

  • KINEMATICS

    PREMIERS PUBLISHERS|Exercise Other important questions & answers (V. Numerical problems).|166 Videos

Similar Questions

Explore conceptually related problems

The maximum and minimum distances of the Earth from the Sun respectively are 152xx10^(6) km and 94.5xx10^(6) km. the Sun is at one focus of the elliptical orbit. Find the distance from the sun to the other focus.

The maximum and minimum distances of the Earth from the Sun respectively are 152 xx 10 ^(8) km and 94.5 xx 10 ^(8) km. The Sun is at one focus of the elliptical orbit. Find the distance from the Sun to the other focus.

Knowledge Check

  • The length of breadth of a rectangular plot are 5xx10^5 and 4xx10^4 metres respectively. Its area is _____

    A
    `9xx10^1 m^2`
    B
    `9xx10^9 m^2`
    C
    `2xx10^10 m^2`
    D
    `20xx10^20 m^2`

  • If K_b and K_f for a reversible reactions are 0.8 xx 10^(-5) and 1.6 xx 10^(-4) respectively, the value of the equilibrium constant is,

    A
    20
    B
    `0.2 xx 10^(-1)`
    C
    0.05
    D
    None of these

  • If K_b and K_f for a reversible reactions are 0.8xx10^(-5) and 1.6xx10^(-4) respectively , the value of the equilibrium constant is ………………. .

    A
    20
    B
    `0.2 xx 10^(-1)`
    C
    `0.05`
    D
    None of these

    • Similar Questions

    Explore conceptually related problems

    A RADAR signal is beamed towards a planet and its echo is received 7 minutes later. If the distance between the planet and the Earth is 6.3 xx 10^(10) m. Calculate the speed of the signal.

    The speed of light in a transparent medium is 2.5xx10^(8)m//s . Find the absolute refractive index of that medium.

    The maximum and minimum distances of a comet from the sun are 1.4xx10^(12)m and 7xx10^(10)m . If its velocity nearst to the sun is 6xx10^(4)ms^(-1) , what is the velocity in the farthest position? Assume that path of the comet in both the instantaneous positions is circular.

    The maximum and minimum distances of a comet from the sun are 1.4xx10^(12)m and 7xx10^(10)m . If its velocity nearst to the sun is 6xx10^(4)ms^(-1) , what is the velocity in the farthest position? Assume that path of the comet in both the instantaneous positions is circular.

    The uncertainty in the position and velocity of a particile are 10^(-10) m and 5.27xx10^(-24)ms^(-1) respectively.Calculate the mass of the particle.

    Home
    Profile