Maths-
General
Easy
Question
The orthogonal projection of 
on 
are unit vectors along three mutually perpendicular directions )
The correct answer is:
Related Questions to study
maths-
If S and 
are foci and A be one and of minor axis of ellipse 
+
= 1, then area of 
is-
If S and are foci and A be one and of minor axis of ellipse += 1, then area of is-
maths-General
maths-
Q is a point on the auxiliary circle corresponding to the point P of the ellipse 
= 1. If T is the foot of the perpendicular dropped from the focus S. onto the tangent to the auxiliary circle at Q then the SPT is -
Q is a point on the auxiliary circle corresponding to the point P of the ellipse = 1. If T is the foot of the perpendicular dropped from the focus S. onto the tangent to the auxiliary circle at Q then the SPT is -
maths-General
physics-
A bob is hanging over a pulley inside a car through a string. The second end of the string is in the hand of a person standing in the car. The car is moving with constant acceleration 'a' directed horizontally as shown in figure. Other end of the string is pulled with constant acceleration ' a ' vertically downward. The tension in the string is equal to :
A bob is hanging over a pulley inside a car through a string. The second end of the string is in the hand of a person standing in the car. The car is moving with constant acceleration 'a' directed horizontally as shown in figure. Other end of the string is pulled with constant acceleration ' a ' vertically downward. The tension in the string is equal to :
physics-General
physics-
Two blocks A and B of masses m & 2m respectively are held at rest such that the spring is in natural length. Find out the accelerations of both the blocks just after release:
Two blocks A and B of masses m & 2m respectively are held at rest such that the spring is in natural length. Find out the accelerations of both the blocks just after release:
physics-General
physics-
A light spring is compressed and placed horizontally between a vertical fixed wall and a block free to slide over a smooth horizontal table top as shown in the figure. The system is released from rest. The graph which represents the relation between the magnitude of acceleration ‘ a ‘ of the block and the distance ‘ x ‘ travelled by it (as long as the spring is compressed) is:
A light spring is compressed and placed horizontally between a vertical fixed wall and a block free to slide over a smooth horizontal table top as shown in the figure. The system is released from rest. The graph which represents the relation between the magnitude of acceleration ‘ a ‘ of the block and the distance ‘ x ‘ travelled by it (as long as the spring is compressed) is:
physics-General
physics-
A wire, which passes through the hole in a small bead, is bent in the form of quarter of a circle. The wire is fixed vertically on ground as shown in the figure. The bead is released from near the top of the wire and it slides along the wire without friction. As the bead moves from A to B, the force it applies on the wire is
A wire, which passes through the hole in a small bead, is bent in the form of quarter of a circle. The wire is fixed vertically on ground as shown in the figure. The bead is released from near the top of the wire and it slides along the wire without friction. As the bead moves from A to B, the force it applies on the wire is
physics-General
physics-
In the figure, a ladder of mass m is shown leaning against a wall. It is in static equilibrium making an angle null and that between the floor and the ladder is 
. The normal reaction of the wall on the ladder is 
and that of the floor is 
. If the ladder is about to slip, then
In the figure, a ladder of mass m is shown leaning against a wall. It is in static equilibrium making an angle null and that between the floor and the ladder is . The normal reaction of the wall on the ladder is and that of the floor is . If the ladder is about to slip, then
physics-General
physics-
A block of mass m is on an inclined plane of angle null. The block is held stationary by applying a force P parallel to the plane. The direction of force pointing up the plane is taken to be positive. As P is varied from
to
the frictional force f versus P graph will look like
A block of mass m is on an inclined plane of angle null. The block is held stationary by applying a force P parallel to the plane. The direction of force pointing up the plane is taken to be positive. As P is varied from
tothe frictional force f versus P graph will look like
physics-General
physics-
A mass ‘m’ is supported by a massless string wound around a uniform hollow cylinder of mass m and radius R. If the string does not slip on the cylinder, with what acceleration will the mass fall on release?
A mass ‘m’ is supported by a massless string wound around a uniform hollow cylinder of mass m and radius R. If the string does not slip on the cylinder, with what acceleration will the mass fall on release?
physics-General
physics-
Two fixed frictionless inclined planes making an angle 
and 
with the vertical are shown in the figure. Two blocks A and B are placed on the two planes. What is the relative vertical acceleration of A with respect to B ?
Two fixed frictionless inclined planes making an angle and with the vertical are shown in the figure. Two blocks A and B are placed on the two planes. What is the relative vertical acceleration of A with respect to B ?
physics-General
physics-
The upper half of an inclined plane with inclination null= 0.5]
The upper half of an inclined plane with inclination null= 0.5]
physics-General
maths-
The tangent and the normal at a point P on an ellipse meet its major axis in T and T' so that TT' = a. Prove that the eccentricity angle 
of P is given by : 
(where e is eccentricity of the ellipse) is equal to -
The tangent and the normal at a point P on an ellipse meet its major axis in T and T' so that TT' = a. Prove that the eccentricity angle of P is given by : (where e is eccentricity of the ellipse) is equal to -
maths-General
maths-
maths-General
physics-
For the indicator diagram given below, select wrong statement
For the indicator diagram given below, select wrong statement
physics-General
physics-
Two blocks of masses 
and 
are connected with a massless spring and placed over a plank moving with an acceleration ‘a’ as shown in figure. The coefficient of friction between the blocks and platform is 
.
Two blocks of masses and are connected with a massless spring and placed over a plank moving with an acceleration ‘a’ as shown in figure. The coefficient of friction between the blocks and platform is .
physics-General
