A particle moves in a horizontal circle on the smooth inner surface of a hemispherical bowl of radius $R$. The plane of motion is at a depth $d$ below the centre of the hemisphere. The speed of the particle is :-

  • A

    $\sqrt {\frac{{g({R^2} - {d^2})}}{R}} $

  • B

    $\sqrt {\frac{{g({R^2} - {d^2})}}{d}} $

  • C

    $\sqrt {\frac{{gR}}{{{R^2} - {d^2}}}} $

  • D

    $\sqrt {\frac{{g d^2}}{{{R^2} - {d^2}}}} $

Similar Questions

A cyclist turns around a curve at $15\, miles/hour$. If he turns at double the speed, the tendency to overturn is

A passenger inside a bus moving with uniform speed suddenly finds that a ball at rest, starts moving towards his left. It means that the bus now is

A string breaks if its tension exceeds $10$ newtons. A stone of mass $250\, gm$ tied to this string of length $10 \,cm$ is rotated in a horizontal circle. The maximum angular velocity of rotation can be ..........  $rad/s$

A vehicle is moving on a track with constant speed as shown in figure. The apparent weight of the vehicle is 

At time $t=0$, a disk of radius $1 m$ starts to roll without slipping on a horizontal plane with an angular acceleration of $\alpha=\frac{2}{3} rad s ^{-2}$. A small stone is stuck to the disk. At $t=0$, it is at the contact point of the disk and the plane. Later, at time $t=\sqrt{\pi} s$, the stone detaches itself and flies off tangentially from the disk. The maximum height (in $m$ ) reached by the stone measured from the plane is $\frac{1}{2}+\frac{x}{10}$. The value of $x$ is. . . . . . .[Take $g=10 m s ^{-2}$.]

  • [IIT 2022]