Home
Class 11
PHYSICS
A particle is thrown at time t = 0 with ...

A particle is thrown at time t = 0 with a velocity of `10 ms^(-1)` at an angle `60^@` with the horizontal from a point on an inclined plane, making an angle of `30^@` with the horizontal. The time when the velocity of the projectile becomes parallel to the incline is

A

`2/(sqrt3) s`

B

`1/(sqrt3) s`

C

`sqrt3 s`

D

`1/(2(sqrt3)) s`

Text Solution

Verified by Experts

The correct Answer is:
B
b. `v_y = v sin 30^@ - g cos 30^@t`

`t= (vsin30^@)/(gcos30^@) = v/g 1/(sqrt3) = 1/(sqrt3)s`.
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • MISCELLANEOUS KINEMATICS

    CENGAGE PHYSICS|Exercise Multiple Correct Answer Type|26 Videos

  • MISCELLANEOUS KINEMATICS

    CENGAGE PHYSICS|Exercise Linked Comprehension Type|35 Videos

  • LINEAR AND ANGULAR SIMPLE HARMONIC MOTION

    CENGAGE PHYSICS|Exercise Multiple Correct Answer Type|9 Videos

  • MISCELLANEOUS VOLUME 2

    CENGAGE PHYSICS|Exercise INTEGER_TYPE|10 Videos

Similar Questions

Explore conceptually related problems

A particle is projected with a velocity of 30 m//s at an angle 60^(@) above the horizontal on a slope of inclination 30^(@) . Find its range, time of flight and angle of hit.

A particle is projected with velocity 50 m/s at an angle 60^(@) with the horizontal from the ground. The time after which its velocity will make an angle 45^(@) with the horizontal is

Knowledge Check

  • A particle is thrown at time t=0 with a velocity of 10 m/s at an angle of 60^(@) with the horizontal from a point on an incline plane, making an angle of 30^(@) with the horizontal. The time when the velocity of the projectile becomes parallel to the incline is :

    A
    `2/sqrt(3)` sec
    B
    `1/sqrt(3)` sec
    C
    `sqrt(3)` sec
    D
    `1/(2sqrt(3))` sec

  • a particle is projected down on inclined plane with a velocity of 21m/s at an angle of 60^@ with the horizontal its range on the inclined plane inclined at an angle of 30^@ with the horizontal is

    A
    21dm
    B
    2.1dm
    C
    30dm
    D
    6dm

  • a particle is projected down on inclined plane with a velocity of 21m/s at an angle of 60^@ with the horizontal its range on the inclined plane inclined at an angle of 30^@ with the horizontal is

    A
    21dm
    B
    2.1dm
    C
    30dm
    D
    6dm

    • Similar Questions

    Explore conceptually related problems

    An inclined plane makes an angle of 60^(@) with horizontal. A disc rolling acceleration equal to:

    A body is thrown with a velocity of 9.8 m//s making an angle of 30^(@) with the horizontal. It will hit the ground after a time

    A projectile is thrown with a velocity of 20 m//s, at an angle of 60^(@) with the horizontal. After how much time the velocity vector will make an angle of 45^(@) with the horizontal (in upward direction) is (take g= 10m//s^(2))-

    A particle is projected at an angle alpha with the horizontal from the foot of an inclined plane making an angle beta with horizontal . Which of the following expressions holds good if the particle strikes the inclined plane normally?

    A particle is projected with a velocity of 20 ms^(-1) at an angle of 60^(@) to the horizontal. The particle hits the horizontal plane again during its journey. What will be the time of impact ?

    Home
    Profile