Home
Class 11
PHYSICS
A block of mass 1kg is tied to a string ...

A block of mass `1kg` is tied to a string of length `1m` the other end of which is fixed The block is moved on a smooth horizontal table with constant speed `10ms^(-1)`. Find the tension in the string

Text Solution

Verified by Experts

The ball in Fig does not accelerate vertically . Therefore, we model if as a particle in equlibrium in the verticle direction . It experiences a centripetal acceleration in the horizontal direction in this case ,contriprtal force is provided by tension

`sum F_(y) = N - mg = 0`
`N = mg`
`sum F_(x) = T = ma_(c) = (mv^(2))/(r )`
`T = (mv^(2))/(r) = (1 xx 10^(2))/(1) = 100N`
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • NEWTON'S LAWS OF MOTION 2

    CENGAGE PHYSICS|Exercise Solved Examples|12 Videos

  • NEWTON'S LAWS OF MOTION 2

    CENGAGE PHYSICS|Exercise Exercise 7.1|25 Videos

  • NEWTON'S LAWS OF MOTION 1

    CENGAGE PHYSICS|Exercise Integer|5 Videos

  • PROPERTIES OF SOLIDS AND FLUIDS

    CENGAGE PHYSICS|Exercise INTEGER_TYPE|2 Videos

Similar Questions

Explore conceptually related problems

Two blocks o equal mass m are tied to each other through light string. One of the blocks is pulled along the line joining them with a constnt force F. Find the tension in the string joining the blocks.

A wooden block or mass m and density rho is tied to a string, the other end of the string is fixed to bottom of a tank. The tank is filled with a liquid of density sigma with sigmagtrho . The tension in the string will be

Knowledge Check

  • The block of mass m is at rest. Find the tension in the string A .

    A
    mg
    B
    2 mg
    C
    3 mg
    D
    4 mg

  • A wooden block of mass 8kg is tied to a string attached to the bottom of a tank. The block is completely inside the water. Relative density of wood is 0.8. Taking g= 10m//s^(2) , What is the tension in the string ?

    A
    100N
    B
    80N
    C
    50N
    D
    20N

  • A stone of mass 1 kg tied at the end of a string of length 1 m and is whirled in a verticle circle at a constant speed of 3 ms^(-1) . The tension in the string will be 19 N when the stone is (g=10 ms^(-1))

    A
    at the top most point on the vertical circle
    B
    at the bottom most point on the vertical circle
    C
    half way down
    D
    making an angle `30^(@)` with the vertical

    • Similar Questions

    Explore conceptually related problems

    A block is tied to one end of a light string of length 1 whose other end is fixed to a rigid support. The block is given a speed of sqrt(7gl//2) from the lowermost position. Find the height and speed at which the block leaves the circle. Also find the maximum height to which it rises finally.

    A stone weighing 1 kg is ties to a string of 1m length and whirled over the horizontal top of a rough plane with a speed of 2 ms^(-1) . Calculate the tension of the string if the coefficient of friction between the table and the stone is 0.3

    A stone at the end of 1m long string is whirled in a vertical circle at a constant speed of 4ms^-1 . The tension in the string is 6N when the stone is

    A stone of mass 5 kg is tied to a string of length 10 m is whirled round in a horizontal circle. What is the maximum speed with which the stone can be whirled around if the string can withstand a maximum tension of 200 N?

    A bullet of mass 0.01 kg and travelling at a speed of 500 ms^(-1) strikes a block of mass 2 kg which is suspended by a string of length 5 m . The centre of gravity of the block is found to raise a vertical distance of 0.2 m . What is the speed of the bullet after it emerges from the block?

    Home
    Profile