Home
Class 11
PHYSICS
The position vectors particle has length...

The position vectors particle has length 1m and makes `30^(@)` with the x-axis. What are the lengths of the x and y components of the position vector?

Text Solution

Verified by Experts

Length of position vector `=OA=1m=l`
x = component of length `l_(x)=?`
y = component of length `l_(y)=?`
`cos30^(@)=(l_(x))/(l)=(l_(x))/(1)=l_(x)`
`therefore l_(x)=cos 30^(@)=(sqrt3)/(2)`
`sin30^(@)=(l_(y))/(l)=l_(y)`
`therefore l_(y)=sin 30^(@)=(1)/(2)`
`l_(x)=(sqrt3)/(2), l_(y)=(1)/(2)`
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • KINEMATICS

    SURA PUBLICATION|Exercise ADDITIONAL QUESTIONS (MULTIPLE CHOICE QUESTIONS)|26 Videos
  • KINEMATICS

    SURA PUBLICATION|Exercise ADDITIONAL QUESTIONS (FILL IN THE BLANKS):|10 Videos
  • KINEMATICS

    SURA PUBLICATION|Exercise EXERCISE QUESTIONS (LONG ANSWER QUESTIONS)|11 Videos
  • HEAT AND THERMODYNAMICS

    SURA PUBLICATION|Exercise Value Based Question|1 Videos
  • KINETIC THEORY OF GASES

    SURA PUBLICATION|Exercise VALUE BASED QUESTIONS|4 Videos

Similar Questions

Explore conceptually related problems

The position vectors particle has length 1m and makes 30^(@) with the x-axis. What are the length of x and y components of the position vector ?

The position vectors particle has length 1m and makes 30^(@) with the x-axis. What are the length of x and y components of the position vector ?

Knowledge Check

  • The position vector of the particle is vecr=3t^2 hati+5t hatj+9hatk . What is the acceleration of the particle?

    A
    `6 ms^(-2) " along " hati`
    B
    `5 ms^(-2)" along "hatj`
    C
    `9 ms^(-2)" along "hatk`
    D
    zero
  • The position vector of a particle is vecr=4t^(2)hati+2thatj+3thatk . The acceleration of a particle is having only

    A
    X-component
    B
    Y-component
    C
    Z-component
    D
    X-Y component
  • Similar Questions

    Explore conceptually related problems

    The position vector of the particle has length of I m makes an angle of 30^(@) with X-axis. What are the lengths of x and y components of the position vector?

    What is position vector?

    What is position vector ? Explain .

    What is position vector ? Explain .

    Write down a unit vector in XY - plane making an angle of 30^(@) with the positive direction of x- axis.

    Two bodies of mass 1kg and 3kg have position vectors hati+2hatj+hatk and -3hati-2hatj+hatk , respectively.The centre of mass of this system has a position vector.