All Flashcards
What are the differences between energy, work, and power?
Energy: The capacity to do work. | Work: Transfer of energy. | Power: Rate at which work is done or energy is transferred.
What is the difference between kinetic and potential energy?
Kinetic Energy: Energy of motion, . | Potential Energy: Stored energy due to position or condition, e.g., or .
Differentiate between conservative and non-conservative forces.
Conservative Forces: Work done is path-independent (e.g., gravity, spring force). | Non-Conservative Forces: Work done is path-dependent (e.g., friction, air resistance).
What is the effect of friction on the total mechanical energy of a system?
Friction causes a decrease in total mechanical energy, converting it into thermal energy.
What happens when positive work is done on an object?
The object's kinetic energy increases, and it speeds up.
What happens when negative work is done on an object?
The object's kinetic energy decreases, and it slows down.
What is the effect of increasing the spring constant (k) on the potential energy stored in a spring?
Increasing the spring constant increases the potential energy stored in the spring for a given displacement.
What happens to the kinetic energy of an object as it falls in a vacuum?
Its kinetic energy increases as its potential energy decreases, maintaining constant total mechanical energy.
What is the difference between energy and power?
Energy is the capacity to do work, while power is the rate at which energy is transferred or work is done.
Differentiate between kinetic and potential energy.
Kinetic energy is the energy of motion; potential energy is stored energy due to position or configuration.
Compare conservative and non-conservative forces.
Conservative forces (e.g., gravity) conserve mechanical energy; non-conservative forces (e.g., friction) dissipate energy as heat.
What are the differences between work and energy?
Work is the transfer of energy from one system to another, while energy is the capacity to do work.