Home
Class 12
PHYSICS
A stone is dropped from the top of a tow...

A stone is dropped from the top of a tower of height `h`. Aftre `1 s` another stone is droppped from the balcony `20 m` below the top. Both reach the bottom simultaneously. What is the value of `h` ? Take `g=10 ms^(-2)`.

Text Solution

Verified by Experts

The correct Answer is:
5
With respect to train:
Time of flight : `T=(2v_(y))/g=(2xx5sqrt(3))/10=sqrt(3)`
By using `s=ut+1/2 at^(2)`
we have `1.15=5T-1/2 aT^(@)rArr a=5 m//s^(2)`
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • MOTION IN A PALNE

    ALLEN |Exercise PHY|75 Videos

  • MOTION IN A PALNE

    ALLEN |Exercise EXERCISE-1|99 Videos

  • MOTION IN A PALNE

    ALLEN |Exercise SUBJECTIVE QUESTION|3 Videos

  • KINEMATICS-2D

    ALLEN |Exercise Exercise (O-2)|47 Videos

  • NEWTON'S LAWS OF MOTION & FRICTION

    ALLEN |Exercise EXERCISE (JA)|4 Videos

Similar Questions

Explore conceptually related problems

A stone is released from the top of a tower of height 19.6m. Calculate its final velocity just before touching the ground.

A stone dropped from the top of a tower of height 300m splashes into the water of a pond near the base of the tower. When is the splash heard at the top given that the speed of sound in air is 340ms^(-1) ? (g= 9.8ms^(-2))

Knowledge Check

  • A stone is dropped from the top of tower. If its velocity at the mid point of height of tower is 10ms^(-1), then the height of a tower is ..... (g = 10 ms^(-2))

    A
    10
    B
    16
    C
    8
    D
    20

    • Similar Questions

    Explore conceptually related problems

    A stone dropped from the top of a tower of height 300 m high splashes into the water of a pond near the base of the tower. When is the splash heard at the top givne that the speed of sound in air is 340 ms ^(-1) ? (g =9.8 ms ^(-2))

    A particle is dropped from the top of a tower. It covers 40 m in last 2s. Find the height of the tower.

    A body is released from the top of a tower of height h. It takes t sec to reach the ground. Where will be the ball after time (t)/(2) sec?

    A stone is dropped from a height h. simultaneously, another stone is thrown up from the ground which reaches a height 4h. The two stones will cross each other after time:-

    A stone dropped from the top of a tower of height 300 m high splashes into the water of a pong near the base of the tower. When is the splash heard at the top ? Given that the speed of sound in air is 340ms^(-1)? (g=9.8ms^(-2)) .

    A ball is dropped from the roof of a tower height h . The total distance covered by it in the last second of its motion is equal to the distance covered by it in first three seconds. The value of h in metre is (g=10m//s^(2))

    Assertion: If a body is dropped from the top of a twoer of height h and another body is thrown up simultaneously with velocity u from the foot of the tower, then both of them would meet after a time (h)/(u) . Reason: For a body projected upwards, the distance covered by the body in the last second of its upwards journey is always 4.9m irrespective of velocity of projection (g=9.8 m//s^(2))

    Home
    Profile