Part 1
A spring, which is initially in its unstretched condition, is first stretched by a length x and then again by a further length x. The work done in the first case is W1 and in the second case is W2. Then
28
Oct
A spring, which is initially in its unstretched condition, is first stretched by a length x and then again by a further length x. The work done in the first case is W1 and in the second case is W2. Then A spring is first stretched by a length x and then again by a [...]
Two springs A and B are identical but A is harder than B(kA > kB). Let W A and WB represent the work done when the springs are stretched through the same of the distance and WA’ and WB′ are the work done when these are stretched by equal forces then which of the following is true:
28
Oct
Two springs A and B are identical but A is harder than B(kA > kB). Let W A and WB represent the work done when the springs are stretched through the same of the distance and WA’ and WB′ are the work done when these are stretched by equal forces then which of the [...]
If the potential energy of a gas molecule is U=M/r^6−N/r^12,M and N being positive constants, then the potential energy at equilibrium must be
28
Oct
If the potential energy of a gas molecule is U=M/r^6−N/r^12,M and N being positive constants, then the potential energy at equilibrium must be If the potential energy of a gas molecule is U=M/r^6−N/r^12 M and N being positive constants then the potential energy at equilibrium must be October 28, 2020 Category: Chapter 6 - Work, [...]
A 8 kg metal block of dimension 16 cm×8 cm×6 cm is lying on a table with its face of largest area touching the table. If g=10 ms^−2, the minimum amount of work done in making it stand with its length vertical is :
28
Oct
A 8 kg metal block of dimension 16 cm×8 cm×6 cm is lying on a table with its face of largest area touching the table. If g=10 ms^−2, the minimum amount of work done in making it stand with its length vertical is : A 8 kg metal block of dimension 16 cm×8 cm×6 cm [...]
The potential energy of a conservative force field is given by U=ax^2−bx where, a and b are positive constants. The law of the force governing the system is
28
Oct
The potential energy of a conservative force field is given by U=ax^2−bx where, a and b are positive constants. The law of the force governing the system is a and b are positive constants. The law of the force governing the system is The potential energy of a conservative force field is given by U=ax^2−bx [...]
Two springs of spring constants 1000N/m and 2000N/m are stretched with same force. They will have potential energy in the ratio of
28
Oct
Two springs of spring constants 1000N/m and 2000N/m are stretched with same force. They will have potential energy in the ratio of Two springs of spring constants 1000N/m and 2000N/m are stretched with same force. They will have potential energy in the ratio of October 28, 2020 Category: Chapter 6 - Work, Energy and Power [...]
The potential energy of a certain spring when stretched through a distance ‘S’ is 10 joule. The amount of work (in joule) that must be done on this spring to stretch it through an additional distance ‘S’ will be
28
Oct
The potential energy of a certain spring when stretched through a distance ‘S’ is 10 joule. The amount of work (in joule) that must be done on this spring to stretch it through an additional distance ‘S’ will be A particle of mass 'm' at rest is acted upon by a force 'p' for a [...]
The potential energy of a particle of mass 5 kg moving in x-y plane is given by u = (7x + 24y) j, where x and y being in meters. If particle starts from rest from origin, then speed of particle at t = 2 sec, is 1
28
Oct
The potential energy of a particle of mass 5 kg moving in x-y plane is given by u = (7x + 24y) j, where x and y being in meters. If particle starts from rest from origin, then speed of particle at t = 2 sec, is 1 is 1 The potential energy of a [...]
A particle is acted upon by a force F which varies with position x as shown in figure. If the particle at x=0 has kinetic energy of 25 J, then the kinetic energy of the particle at x=16 m is
28
Oct
A particle is acted upon by a force F which varies with position x as shown in figure. If the particle at x=0 has kinetic energy of 25 J, then the kinetic energy of the particle at x=16 m is A particle is acted upon by a force F which varies with position x as [...]
A block of mass 5 kg is resting on a smooth surface. At what angle a force of 20N be acted on the body so that it will acquired a kinetic energy of 40J after moving 4m ?
28
Oct
A block of mass 5 kg is resting on a smooth surface. At what angle a force of 20N be acted on the body so that it will acquired a kinetic energy of 40J after moving 4m ? A block of mass 5 kg is resting on a smooth surface. At what angle a force [...]