Physics-
General
Easy
Question
The spring block system lies on a smooth horizontal surface. The free end of the spring is being pulled towards right with constant speed v0 = 2m/s. At t = 0 sec, the spring of constant k = 100 N/cm is unstretched and the block has a speed 1 m/s to left. The maximum extension of the spring is
- 2 cm
- 4 cm
- 6 cm
- 8 cm
The correct answer is: 6 cm
Related Questions to study
physics-
A block of mass m is attached with a massless spring of force constant k. The block is placed over a fixed rough inclined surface for which the coefficient of friction is 
The block of mass m is initially at rest. The block of mass M is released from rest with spring in unstretched state. The minimum value of M required to move the block up the plane is (neglect mass of string and pulley and friction in pulley.)
A block of mass m is attached with a massless spring of force constant k. The block is placed over a fixed rough inclined surface for which the coefficient of friction is The block of mass m is initially at rest. The block of mass M is released from rest with spring in unstretched state. The minimum value of M required to move the block up the plane is (neglect mass of string and pulley and friction in pulley.)
physics-General
physics-
A weightless rod of length 
carries two equal masses 'm', one tied at lower end A and the other at the middle of the rod at B. The rod can rotate in vertical plane about a fixed horizontal axis passing through C. The rod is released from rest in horizontal position. The speed of the mass B at the instant rod, become vertical is :
A weightless rod of length carries two equal masses 'm', one tied at lower end A and the other at the middle of the rod at B. The rod can rotate in vertical plane about a fixed horizontal axis passing through C. The rod is released from rest in horizontal position. The speed of the mass B at the instant rod, become vertical is :
physics-General
physics-
In the figure shown the potential energy U of a particle is plotted against its position ' x ' from origin. Then which of the following statement is correct.
In the figure shown the potential energy U of a particle is plotted against its position ' x ' from origin. Then which of the following statement is correct.
physics-General
physics-
In the figure shown there are two semicircles of radii 
and 
in which a current 
is flowing. The magnetic induction at the centre
will be
In the figure shown there are two semicircles of radii and in which a current is flowing. The magnetic induction at the centre will be
physics-General
physics-
Two long parallel wires are at a distance 
apart. They carry steady equal current flowing out of the plane of the paper as shown. The variation of the magnetic field along the line 
is given by
Two long parallel wires are at a distance apart. They carry steady equal current flowing out of the plane of the paper as shown. The variation of the magnetic field along the line is given by
physics-General
physics-
An infinitely long wire carrying current is along 
-axis such that its one end is at point (
while the wire extends upto 
. The magnitude of magnetic field strength at point 
is
An infinitely long wire carrying current is along -axis such that its one end is at point ( while the wire extends upto . The magnitude of magnetic field strength at point is
physics-General
physics-
In the given figure and magnetic field at will be
In the given figure and magnetic field at will be
physics-General
physics-
Two long wires are hanging freely. They are joined first in parallel and then in series and then are connected with a battery. In both cases, which type of force acts between the two wires
Two long wires are hanging freely. They are joined first in parallel and then in series and then are connected with a battery. In both cases, which type of force acts between the two wires
physics-General
physics-
A current 
flowing through the loop as shown in figure. The magnetic field at centre is
A current flowing through the loop as shown in figure. The magnetic field at centre is
physics-General
physics-
In the figure shown, the magnetic field induction at the point will be
In the figure shown, the magnetic field induction at the point will be
physics-General
physics-
A coil 
carrying a current ampere is placed in a powerful horse shoe magnet 
of uniform magnetic field 
figure. If 
is the area of the coil and 
is the inclination of the plane of the coil with the magnetic field in equilibrium, then the deflecting couple will be
A coil carrying a current ampere is placed in a powerful horse shoe magnet of uniform magnetic field figure. If is the area of the coil and is the inclination of the plane of the coil with the magnetic field in equilibrium, then the deflecting couple will be
physics-General
physics-
The figure shows certain wire segments joined together to form a coplanar loop. The loop is placed in a perpendicular magnetic field in the direction going into the plane of the figure. The magnitude of the field increases with time. 
and
are the currents in segment ab and cd. Then,
The figure shows certain wire segments joined together to form a coplanar loop. The loop is placed in a perpendicular magnetic field in the direction going into the plane of the figure. The magnitude of the field increases with time. and are the currents in segment ab and cd. Then,
physics-General
physics-
A current carrying wire 
is bent in the form shown below. If wire carries a current of 
and it is placed in a magnetic field of 
which acts perpendicular to the paper outward then it will experience a force
A current carrying wire is bent in the form shown below. If wire carries a current of and it is placed in a magnetic field of which acts perpendicular to the paper outward then it will experience a force
physics-General
physics-
A wire 
is bent as shown in figure and is placed in a region of uniform magnetic field 
The length of 
A current ampere flows through the wire as shown. The magnitude of the force on 
will be
A wire is bent as shown in figure and is placed in a region of uniform magnetic field The length of A current ampere flows through the wire as shown. The magnitude of the force on will be
physics-General
physics-
A current 
carrying circular wire of radius 
is placed in a magnetic field 
perpendicular to its plane. The tension 
along the circumference of wire is
A current carrying circular wire of radius is placed in a magnetic field perpendicular to its plane. The tension along the circumference of wire is
physics-General
