Question Answers
Sahay Sir > Question Answers
A uniformly charged wire of linear charge density λ is in the form of circular are of radius r and angle θ. If k is Coulomb law constant then the electrical potential at the centre O is
30
Aug
A uniformly charged wire of linear charge density λ is in the form of circular are of radius r and angle θ. If k is Coulomb law constant then the electrical potential at the centre O is A uniformly charged wire of linear charge density λ is in the form of circular are of radius [...]
In the figure , masses m1 , m2 and M are 20 kg , 5 kg and 50 kg respectively . The coefficient of friction between M and ground is zero . The coefficient of friction between m1 and M and that between m and ground 0.4 . The pulleys and the string are massless . The string is perfectly horizontal between P1 and m1 and also between P1 and m2 . The string is perfectly vertical between P1 and P2 . An external horizonatal force F is applied to the mass M . Take g = 10 m /s^2
30
Aug
In the figure , masses m1 , m2 and M are 20 kg , 5 kg and 50 kg respectively . The coefficient of friction between M and ground is zero . The coefficient of friction between m1 and M and that between m and ground 0.4 . The pulleys and the string are massless [...]
A rod of length l, has a uniform positive charge per unit length and a total charge Q. calculate the electric foeld at a point P located along the long axis of the rod and at a distance a from one end
30
Aug
A rod of length l, has a uniform positive charge per unit length and a total charge Q. calculate the electric foeld at a point P located along the long axis of the rod and at a distance a from one end A rod of length l has a uniform positive charge per unit length [...]
In a certain region of space, there exists a uniform and constant electric field of magnitude E along the positive y-axis of a coordinate system. A charged particle of mass m and charge -q (qgt0) is projected form the origin with speed 2v at an angle of 60∘ with the positive x-axis in x-y plane. When the x-coordinate of particle becomes 3–√mv2/qE a uniform and constant magnetic. field of strength B is also switched on along positive y-axis. x-coordinate of the particle as a function of time after the magnetic field is switched on is
30
Aug
In a certain region of space, there exists a uniform and constant electric field of magnitude E along the positive y-axis of a coordinate system. A charged particle of mass m and charge -q (qgt0) is projected form the origin with speed 2v at an angle of 60∘ with the positive x-axis in x-y plane. [...]
Tags:
A charged cork ball of mass m is suspended on a light sting in the presence of a uniform electric field as shown in fig. When E=(Aiˆ+Bjˆ)NC−1 ,
In a certain region of space ,
the ball is in equilibirum at θ. Find (a) the charge on the ball and (b) the tension in the string. ,
Where A and B positive numbers ,
A coin is pushed down tangentially from position theta on a cylindrical surface with a velocity v as shown in Fig. If the coefficient of friction between the coin and surface is mu find the tangential acceleration of the coin
30
Aug
A coin is pushed down tangentially from position theta on a cylindrical surface with a velocity v as shown in Fig. If the coefficient of friction between the coin and surface is mu find the tangential acceleration of the coin A motorcycle has to move with a constant speed on an overbridge which is in [...]
A motorcycle has to move with a constant speed on an overbridge which is in the form of a circular are of radius R and has a total length L. Suppose the motorcycle starts from the highest point.
30
Aug
A motorcycle has to move with a constant speed on an overbridge which is in the form of a circular are of radius R and has a total length L. Suppose the motorcycle starts from the highest point. A motorcycle has to move with a constant speed on an overbridge which is in the form [...]
A simple pendulum has a bob of mass m which carries a charge q on it. Length of the pendulum is L. There is a uniform electric field E in the region. Calculate the time period of small oscillations for the pendulum about its equilibrium position in following cases: (i). E is vertically down having magnitude E=mgq (ii). E is vertically up having magnitude E=2mgq (iii). E is horizontal having magnitude E=mgq (iv). E has magnitude of E=q and is directed upward making an angle 45∘ with the horizontal
30
Aug
A simple pendulum has a bob of mass m which carries a charge q on it. Length of the pendulum is L. There is a uniform electric field E in the region. Calculate the time period of small oscillations for the pendulum about its equilibrium position in following cases: (i). E is vertically down having [...]
A charged cork ball of mass m is suspended on a light sting in the presence of a uniform electric field as shown in fig. When E=(Aiˆ+Bjˆ)NC−1, Where A and B positive numbers, the ball is in equilibirum at θ. Find (a) the charge on the ball and (b) the tension in the string.
30
Aug
A charged cork ball of mass m is suspended on a light sting in the presence of a uniform electric field as shown in fig. When E=(Aiˆ+Bjˆ)NC−1, Where A and B positive numbers, the ball is in equilibirum at θ. Find (a) the charge on the ball and (b) the tension in the string. A [...]
An inclined plane of angle alpha is fixed onto a horizontal turntable with its line of greater slope in same plane as a diameter of forntable .A small block is placed on the inclined plane a distance r from the axis the coefficient of fraction between the block and the inclined plane is mu The turntable along with incline plane spins about its axis with constant minimum angular velocity omega
30
Aug
An inclined plane of angle alpha is fixed onto a horizontal turntable with its line of greater slope in same plane as a diameter of forntable .A small block is placed on the inclined plane a distance r from the axis the coefficient of fraction between the block and the inclined plane is mu The [...]
Two point charge Qa and Qb are positional at point A and B. The field strenght to the right of charge Qb on the line that passes therough the two charges varies according to a law represented schematically in fig. (without employing a definite scale). The field strength is assumed to be positive if its direction coincedes with the positive direction of the x-axis. The distance between the charges is l=21cm .
30
Aug
Two point charge Qa and Qb are positional at point A and B. The field strenght to the right of charge Qb on the line that passes therough the two charges varies according to a law represented schematically in fig. (without employing a definite scale). The field strength is assumed to be positive if its [...]