Physics-
General
Easy
Question
A 0.098 kg block slides down a frictionless track as shown. The vertical component of the velocity of block at 
is
The correct answer is:
or 
Vertical component at 
Related Questions to study
Physics-
A small mass 
is attached to a massless string whose other end is fixed at 
as shown in the figure. The mass is undergoing circular motion in the 
plane with center at 
and constant angular speed 
. If the angular momentum of the system, calculated about 
and are denoted by 
and 
respectively, then
A small mass is attached to a massless string whose other end is fixed at as shown in the figure. The mass is undergoing circular motion in the plane with center at and constant angular speed . If the angular momentum of the system, calculated about and are denoted by and respectively, then
Physics-General
chemistry-
The monomer used to produce neoprene is
The monomer used to produce neoprene is
chemistry-General
chemistry-
What is ‘A’ in the following reaction?
What is ‘A’ in the following reaction?
chemistry-General
chemistry-
What is ‘A’ in the following reaction?
What is ‘A’ in the following reaction?
chemistry-General
Physics-
Three identical particles are joined together by a thread as shown in figure. All the three particles are moving in a horizontal plane. If the velocity of the outermost particle is 
, then the ratio of tensions in the three sections of the string is
Three identical particles are joined together by a thread as shown in figure. All the three particles are moving in a horizontal plane. If the velocity of the outermost particle is , then the ratio of tensions in the three sections of the string is
Physics-General
physics-
A weightless thread can bear tension up to
wt. A stone of mass 
is tied to it and revolved in a circular path of radius 
in a vertical plane. If 
, then the maximum angular velocity of the stone will be
A weightless thread can bear tension up to wt. A stone of mass is tied to it and revolved in a circular path of radius in a vertical plane. If , then the maximum angular velocity of the stone will be
physics-General
physics-
A man 80 kg is supported by two cables as shown in the figure. Then the ratio of tensions 
and 
is
A man 80 kg is supported by two cables as shown in the figure. Then the ratio of tensions and is
physics-General
Maths-
A square matrix 
for 
and 
(constant) for 
is called a
A square matrix for and (constant) for is called a
Maths-General
chemistry-
DS for the reaction: MgCO3(s) → MgO(s) + CO2(g) will be -
DS for the reaction: MgCO3(s) → MgO(s) + CO2(g) will be -
chemistry-General
physics-
A point P moves in counter-clockwise direction on a circular path as shown in the figure. The movement of P is such that it sweeps out length 
where 
is in metre and t is in second. The radius of the path is 20 m. The acceleration of P when t =2s is nearly
A point P moves in counter-clockwise direction on a circular path as shown in the figure. The movement of P is such that it sweeps out length where is in metre and t is in second. The radius of the path is 20 m. The acceleration of P when t =2s is nearly
physics-General
chemistry-
For the reaction N2(g)+3H2(g)→2NH3(g),DH is-
For the reaction N2(g)+3H2(g)→2NH3(g),DH is-
chemistry-General
physics-
Three identical spheres of mass 
each are placed at the corners of an equilateral triangle of side 2. Taking one of the corner as the origin, the position vector of the centre of mass is
Three identical spheres of mass each are placed at the corners of an equilateral triangle of side 2. Taking one of the corner as the origin, the position vector of the centre of mass is
physics-General
physics-
Four bodies of equal mass start moving with same speed are shown in the figure. In which of the following combination the centre of mass will remain at origin?
Four bodies of equal mass start moving with same speed are shown in the figure. In which of the following combination the centre of mass will remain at origin?
physics-General
chemistry-
From the reactions: C(s)+2H2(g)→CH4(g)DH=–XK cal C(g)+4H(g)→CH4(g),DH=–X1Kcal CH4(g)→CH3(g)+H(g)DH=+Y(Kcal) Bond energy of C–H bond is-
From the reactions: C(s)+2H2(g)→CH4(g)DH=–XK cal C(g)+4H(g)→CH4(g),DH=–X1Kcal CH4(g)→CH3(g)+H(g)DH=+Y(Kcal) Bond energy of C–H bond is-
chemistry-General
physics-
From a circular disc of radius 
and mass 9 , a small disc of radius /3 is removed from the disc. The moment of inertia of the remaining disc about an axis perpendicular to the plane of the disc and passing through is
From a circular disc of radius and mass 9 , a small disc of radius /3 is removed from the disc. The moment of inertia of the remaining disc about an axis perpendicular to the plane of the disc and passing through is
physics-General
