Non-Conservative Forces

What is the definition of a non-conservative force?

• A non-conservative force is a force that does not change the energy of a system.

• A non-conservative force is a force that is always perpendicular to the direction of motion.

• A non-conservative force is a force where the work done by the force is dependent on the path taken.

• A non-conservative force is a force that is constant regardless of the path taken.

Give an example of a non-conservative force.

• Gravity

• Friction

• Tension

• Inertia

How does the work done by a non-conservative force depend on the path taken?

• The work done by a non-conservative force is always positive.

• The work done by a non-conservative force is inversely proportional to the path taken.

• The work done by a non-conservative force is independent of the path taken.

• The work done by a non-conservative force depends on the path taken.

Explain the concept of mechanical energy in the presence of non-conservative forces.

• Mechanical energy is not conserved in the presence of non-conservative forces.

• Mechanical energy is always conserved regardless of non-conservative forces.

• Non-conservative forces do not affect mechanical energy.

• Mechanical energy increases in the presence of non-conservative forces.

What is the relationship between non-conservative forces and potential energy?

• Non-conservative forces do not have a corresponding potential energy function.

• Non-conservative forces increase potential energy exponentially

• Non-conservative forces decrease potential energy linearly

• Non-conservative forces have a linear relationship with potential energy

Discuss the role of friction as a non-conservative force.

• Friction is independent of the surfaces in contact

• Friction is a non-conservative force as it dissipates mechanical energy into heat and depends on the path taken.

• Friction does not affect the path taken by an object

• Friction is a conservative force that stores mechanical energy

How can non-conservative forces affect the total mechanical energy of a system?

• Non-conservative forces increase the total mechanical energy

• Non-conservative forces decrease the total mechanical energy

• Non-conservative forces can change the total mechanical energy of a system by doing work on it.

• Non-conservative forces have no impact on the total mechanical energy

Explain the concept of power in the context of non-conservative forces.

• Power in the context of non-conservative forces is the rate at which work is done by these forces on an object.

• Power is the distance traveled by an object under the influence of non-conservative forces

• Power is the force exerted by non-conservative forces on an object

• Power is the energy stored in an object due to non-conservative forces

What are some real-life examples where non-conservative forces play a significant role?

• Gravity, magnetism, electricity

• Inertia, momentum, kinetic energy

• Friction, air resistance, tension

• Pressure, temperature, density

How can non-conservative forces impact the motion of an object?

• Non-conservative forces can only change the color of an object

• Non-conservative forces can change the mechanical energy of an object by doing work on it.

• Non-conservative forces have no impact on the motion of an object

• Non-conservative forces make an object move at a constant speed