Motion of rigid body - class-XI
Description: motion of rigid body | |
Number of Questions: 28 | |
Created by: Sanjiv Memon | |
Tags: physics force rigid body dynamics systems of particles and rotational motion motion of system of particles and rigid bodies rotational motion of a rigid body and moment of inertia |
A uniform sphere is placed on a smooth horizontal surface and a horizontal force $F$ is applied on it at a distance $'h'$ above the surface. The acceleration of the centre
A block of mass $m$ slides down a smooth vertical circular track. During the motion, the block is in.
A heavy seesaw (i.e., not massless) is out of balance. A light girl sits on the end that is tilted downward, and a heavy body sits on the other side so that the seesaw now balances. If they both move forward so that they are one-half their original distance from the pivot point (the fulcrum) what will happen to the seesaw?
Three weight $W, 2W$ and $3W$, are connected to identical springs suspended from rigid horizontal rod. The assembly of the rod and the weights fall freely. The positions of the weights from the rod are such that
Assertion (A) : A wheel may be rotated with uniform angular velocity even though the tangential forces are applied on it.
Reason (R) : Angular acceleration of wheel is zero when tangential force and frictional force produce torques equal in magnitude and opposite in direction.
A uniform rule is pivoted at its mid point. A weight of $50\ gf$ is suspended at one end of it. Where should a weight of $100\ gf$ be suspended, to keep the rule horizontal?
Calculate the force required to lift a load of $60\ N$, placed at a distance of $3\ m$, from the fulcrum if the effort force is applied at a distance of $6\ cm$ from the fulcrum.
A body is in pure rotation. The linear speed $v$ of the particle, the distance $r$ of the particle from the axis and the angular velocity $\omega$ of the body are related as $\omega=\dfrac{v}{r}$. Thus
When a spinning top slows down, it begins to wobble. This phenomenon can be explained by
The COM of body in pure rotation does-
Find the new coordinates of the point (3, 4), if the origin is shifted to the point (1, 3).
A bicycle tyre in motion has :
Which of the following statements can be suitable?
Which of the following cannot be considered an example of precession?
A solid sphere is given angular velocity $\omega _0 $ and then kept on rough horizontal surface gently. When sphere starts pure rolling its angular velocity $\omega$ is
A man stands at the centre of a turn table it extended horizontally, with a $5 kg$ mass hand. He is set into rotation with an angular of one revolution in $2s$. His new angular is he drops his hands to his sides is (Assume moment of inertia of the man is $6 \ kgm^2$. The distance of the wavelength from the axis is $1 m$and final distance is $0.2 m$)
For a particle showing motion under the force $F=-5{ \left( x-2 \right) }^{ 2 },$ the motion is
For a particle showing motion under the force $F=-5{ \left( x-2 \right) },$ the motion is
Ram says, $'A$ body may be in pure rotation in the presence of a single external force, 'Shyam says, 'This is possible only for a rigid body', then:
What torque will increase angular velocity of a solid disc of mass $16kg$ and diameter $1m$ from zero to $2$rpm in $8s$?
The translation distances (dx, dy) is called as
Rotation as well as translation motion is an example of
Any point on the circumference of a rigid body which is rolling without slipping undergoes :
A common example of precession is
Rolling without slipping is an example of
A pendulum having a bob of mass m is hanging in a ship sailing along the equator from east to west. When the ship is stationary with respect to water, the tension in the string is $T _0$. Find the difference between tension when the ship is sailing with a velocity $v$.