Physics-
General
Easy
Question
A uniform meters stick of mass m is pivoted about a horizontal axis through its lower end O. Initially it is held vertical and is allowed to fall freely down. Its angular velocity at the instant when it makes angle 60° with vertical is
The correct answer is:
Related Questions to study
physics-
Two spheres each of mass m and radius R/2 are connected with a massless rod of length 2R as shown in the figure. What will be the moment of inertia of the system about an axis passing through the centre of one of the spheres and perpendicular to the rod?
Two spheres each of mass m and radius R/2 are connected with a massless rod of length 2R as shown in the figure. What will be the moment of inertia of the system about an axis passing through the centre of one of the spheres and perpendicular to the rod?
physics-General
physics-
An equilateral triangle ABC formed from a uniform wire has two small identical beads initially located at A. The triangle is set rotating about the vertical axis AO. Then the beads are released from rest simultaneously and allowed to slide down, one along AB and the other along AC as shown. Neglecting frictional effects, the quantities that are conserved as the beads slide down, are
An equilateral triangle ABC formed from a uniform wire has two small identical beads initially located at A. The triangle is set rotating about the vertical axis AO. Then the beads are released from rest simultaneously and allowed to slide down, one along AB and the other along AC as shown. Neglecting frictional effects, the quantities that are conserved as the beads slide down, are
physics-General
physics-
Velocity -time (v-t) graph for a moving object is shown in the figure Total displacement of the object during the time interval when there is non-zero acceleration and retardation is
Velocity -time (v-t) graph for a moving object is shown in the figure Total displacement of the object during the time interval when there is non-zero acceleration and retardation is
physics-General
physics-
Figure shows the displacement-time (x-t) graph of a body moving in a straight line Which one of the graphs shown in figure represents the velocity-time (v-t) graph of the motion of the body
Figure shows the displacement-time (x-t) graph of a body moving in a straight line Which one of the graphs shown in figure represents the velocity-time (v-t) graph of the motion of the body
physics-General
chemistry-
The rate constant of nth order reaction has units -
The rate constant of nth order reaction has units -
chemistry-General
chemistry-
The accompanying figure depicts the change in concentration of species X and Y for the reaction X→Y as a function of time the point of intersection of the two curves represents,
The accompanying figure depicts the change in concentration of species X and Y for the reaction X→Y as a function of time the point of intersection of the two curves represents,
chemistry-General
chemistry-
Calculate the order of the reaction in A and B :
Calculate the order of the reaction in A and B :
chemistry-General
chemistry-
For a hypothetical reaction ;A+B
C the following data was obtained in three different experiments:
Suggest rate law :
For a hypothetical reaction ;A+BC the following data was obtained in three different experiments:
Suggest rate law :
chemistry-General
chemistry-
Select the law that corresponds to data shown for the following reaction 
Select the law that corresponds to data shown for the following reaction
chemistry-General
chemistry-
Select the rate low that corresponds to the data shown for the following reaction A+BC
Select the rate low that corresponds to the data shown for the following reaction A+BC
chemistry-General
physics-
An impulse J is applied on a ring of mass m along a line passing through its centre O and parallel to horizontal surface. The ring is paced on a rough horizontal surface. The linear velocity of centre of ring when it starts rolling without slipping is
An impulse J is applied on a ring of mass m along a line passing through its centre O and parallel to horizontal surface. The ring is paced on a rough horizontal surface. The linear velocity of centre of ring when it starts rolling without slipping is
physics-General
physics-
Two springs, of force constants
, are connected to a mass 
as shown. The frequency of the mass is 
. If both are made four times their original values, the frequency of oscillation becomes
Two springs, of force constants, are connected to a mass as shown. The frequency of the mass is . If both are made four times their original values, the frequency of oscillation becomes
physics-General
physics-
The variation of velocity of particle moving along a straight line is shown in the figure The distance travelled by the particle in
The variation of velocity of particle moving along a straight line is shown in the figure The distance travelled by the particle in
physics-General
physics-
The velocity-time graph of a stone thrown vertically upward with an initial velocity of 1 -30ms is shown in the figure The velocity in the upward direction is taken as positive and that in the downward direction as negative What is the maximum height to which the stone rises?
The velocity-time graph of a stone thrown vertically upward with an initial velocity of 1 -30ms is shown in the figure The velocity in the upward direction is taken as positive and that in the downward direction as negative What is the maximum height to which the stone rises?
physics-General
physics-
The velocity time graph of a body moving in a straight line is shown in the figure The displacement and distance travelled by the body in 6 sec are respectively (in metres) .
The velocity time graph of a body moving in a straight line is shown in the figure The displacement and distance travelled by the body in 6 sec are respectively (in metres) .
physics-General
