CONSERVATION OF MECHANICAL ENERGY
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Work, Energy and Power

268598 If ' \(E\) ' represents total mechanical energy of a system while ' \(U\) ' represents the potential energy, then \(E-U\) is

1 always zero
2 negative
3 either positive or negative
4 positive
Work, Energy and Power

268599 For a body thrown vertically upwards, its direction of motion changes at the point where its total mechanical energy is

1 greater than the potential energy
2 less than the potential energy
3 equal to the potential energy
4 zero
Work, Energy and Power

268601 Negative of work done by the conservation forces on a system is equal to

1 the change in kinetic energy of the system
2 the change in potential energy of the system
3 the change in total mechanical energy of the system
4 the change in the momentum of the system
Work, Energy and Power

268595 A shell is fired into air at an angle \(\theta\) with the horizontal from the ground. On reaching the maximum height,

1 its kinetic energy is not equal to zero
2 its kinetic energy is equal to zero
3 its potential energy is equal to zero
4 both its potential and kinetic energies are zero
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Work, Energy and Power

268598 If ' \(E\) ' represents total mechanical energy of a system while ' \(U\) ' represents the potential energy, then \(E-U\) is

1 always zero
2 negative
3 either positive or negative
4 positive
Work, Energy and Power

268599 For a body thrown vertically upwards, its direction of motion changes at the point where its total mechanical energy is

1 greater than the potential energy
2 less than the potential energy
3 equal to the potential energy
4 zero
Work, Energy and Power

268601 Negative of work done by the conservation forces on a system is equal to

1 the change in kinetic energy of the system
2 the change in potential energy of the system
3 the change in total mechanical energy of the system
4 the change in the momentum of the system
Work, Energy and Power

268595 A shell is fired into air at an angle \(\theta\) with the horizontal from the ground. On reaching the maximum height,

1 its kinetic energy is not equal to zero
2 its kinetic energy is equal to zero
3 its potential energy is equal to zero
4 both its potential and kinetic energies are zero
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Work, Energy and Power

268598 If ' \(E\) ' represents total mechanical energy of a system while ' \(U\) ' represents the potential energy, then \(E-U\) is

1 always zero
2 negative
3 either positive or negative
4 positive
Work, Energy and Power

268599 For a body thrown vertically upwards, its direction of motion changes at the point where its total mechanical energy is

1 greater than the potential energy
2 less than the potential energy
3 equal to the potential energy
4 zero
Work, Energy and Power

268601 Negative of work done by the conservation forces on a system is equal to

1 the change in kinetic energy of the system
2 the change in potential energy of the system
3 the change in total mechanical energy of the system
4 the change in the momentum of the system
Work, Energy and Power

268595 A shell is fired into air at an angle \(\theta\) with the horizontal from the ground. On reaching the maximum height,

1 its kinetic energy is not equal to zero
2 its kinetic energy is equal to zero
3 its potential energy is equal to zero
4 both its potential and kinetic energies are zero
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Work, Energy and Power

268598 If ' \(E\) ' represents total mechanical energy of a system while ' \(U\) ' represents the potential energy, then \(E-U\) is

1 always zero
2 negative
3 either positive or negative
4 positive
Work, Energy and Power

268599 For a body thrown vertically upwards, its direction of motion changes at the point where its total mechanical energy is

1 greater than the potential energy
2 less than the potential energy
3 equal to the potential energy
4 zero
Work, Energy and Power

268601 Negative of work done by the conservation forces on a system is equal to

1 the change in kinetic energy of the system
2 the change in potential energy of the system
3 the change in total mechanical energy of the system
4 the change in the momentum of the system
Work, Energy and Power

268595 A shell is fired into air at an angle \(\theta\) with the horizontal from the ground. On reaching the maximum height,

1 its kinetic energy is not equal to zero
2 its kinetic energy is equal to zero
3 its potential energy is equal to zero
4 both its potential and kinetic energies are zero
For More Updates join with Us