Physics-
Average torque on a projectile of mass
, initial speed
and angles of projection
, between initial and final position
and
as shown in figure about the point of projection is

Physics-General
Answer:The correct answer is:
Time of flight. 
Horizontal range, 
Change in angular momentum,
about point of projection




Book A Free Demo

Grade*
Select Grade
Related Questions to study
physics-
A particle originally at a rest at the highest point of a smooth circle in a vertical plane, is gently pushed and starts sliding along the circle. It will leave the circle at a vertical distance
below the highest point such that

From law of conservation of energy, potential energy of fall gets converted to kinetic energy.




Also, the horizontal component of force is equal centrifugal force.

From Eq. (i)

From





Also, the horizontal component of force is equal centrifugal force.
From Eq. (i)
From
A particle originally at a rest at the highest point of a smooth circle in a vertical plane, is gently pushed and starts sliding along the circle. It will leave the circle at a vertical distance
below the highest point such that

physics-General
From law of conservation of energy, potential energy of fall gets converted to kinetic energy.




Also, the horizontal component of force is equal centrifugal force.

From Eq. (i)

From





Also, the horizontal component of force is equal centrifugal force.
From Eq. (i)
From
physics-
A 0.098 kg block slides down a frictionless track as shown. The vertical component of the velocity of block at
is
Vertical component at
A 0.098 kg block slides down a frictionless track as shown. The vertical component of the velocity of block at
is
physics-General
Vertical component at
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?

Markovikov’s rule is followed
What is ‘A’ in the following reaction?

chemistry-General
Markovikov’s rule is followed
chemistry-
What is ‘A’ in the following reaction?

Markovikov’s rule is followed
What is ‘A’ in the following reaction?

chemistry-General
Markovikov’s rule is followed
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

Let
is the angular speed of revolution






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
Let
is the angular speed of revolution






chemistry-
Wurtz reaction of methyl iodide yields an organic compound X. which of the following reaction also yields X ?
Wurtz reaction of methyl iodide yields an organic compound X. which of the following reaction also yields X ?
chemistry-General
physics-
Two particles 1 and 2 are projected with same speed
as shown in figure. Particle 2 is on the ground and particle 1 is at a height
from the ground and at a horizontal distance
from particle 2. If a graph is plotted between
and
for the condition of collision of the two then (
on
-axis and
on
-axis)

Assuming particle 2 to be at rest, substituting in


We have
or
Which is a straight line passing through origin with slope

We have
or
Which is a straight line passing through origin with slope
Two particles 1 and 2 are projected with same speed
as shown in figure. Particle 2 is on the ground and particle 1 is at a height
from the ground and at a horizontal distance
from particle 2. If a graph is plotted between
and
for the condition of collision of the two then (
on
-axis and
on
-axis)

physics-General
Assuming particle 2 to be at rest, substituting in


We have
or
Which is a straight line passing through origin with slope

We have
or
Which is a straight line passing through origin with slope
chemistry-
The name of monomers present in the following polymer

The name of monomers present in the following polymer

chemistry-General
chemistry-
The major product obtained on monobromination (with Br2/ FeBr3) of the following compound A is

Since both OCH3 and CH3 are o. p directing, the following products are possible

Since OCH3 group is bulkier than CH3 i.e., sterically less hindered ; product (I) is formed Therefore option (B) is correct

Since OCH3 group is bulkier than CH3 i.e., sterically less hindered ; product (I) is formed Therefore option (B) is correct
The major product obtained on monobromination (with Br2/ FeBr3) of the following compound A is

chemistry-General
Since both OCH3 and CH3 are o. p directing, the following products are possible

Since OCH3 group is bulkier than CH3 i.e., sterically less hindered ; product (I) is formed Therefore option (B) is correct

Since OCH3 group is bulkier than CH3 i.e., sterically less hindered ; product (I) is formed Therefore option (B) is correct
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
Max. tension that string can bear 
Tension at lowest point of vertical loop


Tension at lowest point of vertical loop
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
Max. tension that string can bear 
Tension at lowest point of vertical loop


Tension at lowest point of vertical loop
chemistry-
Out of phenoxide and ethnocide ion, only ethoxide ion will react with iodoethane to give diethyl ether 
chemistry-General
Out of phenoxide and ethnocide ion, only ethoxide ion will react with iodoethane to give diethyl ether 
physics-
A man 80 kg is supported by two cables as shown in the figure. Then the ratio of tensions
and
is

From figure in equilibrium position

or
or

or
or

A man 80 kg is supported by two cables as shown in the figure. Then the ratio of tensions
and
is

physics-General
From figure in equilibrium position

or
or

or
or

chemistry-
Which of the carbon atoms present in the molecule given below are asymmetric?

(ii) and (iii) carbon atoms are asymmetric
Which of the carbon atoms present in the molecule given below are asymmetric?

chemistry-General
(ii) and (iii) carbon atoms are asymmetric