Physics-
General
Easy
Question
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
The correct answer is:
Let 
is the angular speed of revolution
Related Questions to study
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
physics-
The instantaneous velocity of a point 
of the given rod of length 0.5 m is 3 
in the represented direction. The angular velocity of the rod for minimum velocity of end A is
The instantaneous velocity of a point of the given rod of length 0.5 m is 3 in the represented direction. The angular velocity of the rod for minimum velocity of end A is
physics-General
biology
The backbone of RNA consists of which of the following sugar?
The backbone of RNA consists of which of the following sugar?
biologyGeneral
biology
Consider the following statements and choose the correct one
Consider the following statements and choose the correct one
biologyGeneral
biology
Identify A to F in the sectional view of a chloroplast showing the different parts
Identify A to F in the sectional view of a chloroplast showing the different parts
biologyGeneral
biology
Organelle important in spindle formation during nuclear division is
Organelle important in spindle formation during nuclear division is
biologyGeneral
