All Flashcards
What is the effect of doing positive work on an object?
The object's kinetic energy increases.
What is the effect of non-conservative forces being present in a system?
Mechanical energy is not conserved, and some energy will be converted to thermal energy.
What happens when a spring is compressed or stretched?
Elastic potential energy is stored in the spring.
What is the effect of increasing the height of an object in a gravitational field?
The object's gravitational potential energy increases.
What happens when friction acts on a moving object?
Kinetic energy is converted into thermal energy, reducing the object's kinetic energy and increasing the internal energy (temperature) of the object and the surface it's sliding on.
What are the differences between kinetic and gravitational potential energy?
Kinetic Energy: Energy of motion, depends on mass and velocity. Gravitational Potential Energy: Energy of position, depends on mass, gravity, and height.
What is the difference between conservative and non-conservative forces?
Conservative forces: Work done is independent of path (e.g., gravity, spring force). Non-conservative forces: Work done depends on path (e.g., friction, air resistance).
What is the difference between Kinetic and Gravitational Potential Energy?
Kinetic Energy: Energy of motion, depends on mass and velocity. | Gravitational Potential Energy: Energy of position, depends on mass, gravity, and height.
What is the difference between Conservative and Non-conservative Forces?
Conservative Forces: Work done is independent of the path taken (e.g., gravity, spring force). Mechanical energy is conserved. | Non-conservative Forces: Work done depends on the path taken (e.g., friction, air resistance). Mechanical energy is not conserved, and some energy is converted to thermal energy.