Podcast
Questions and Answers
Which type of energy does an object possess due to its position in a gravitational field?
Which type of energy does an object possess due to its position in a gravitational field?
- Thermal energy
- Potential energy (correct)
- Kinetic energy
- Electrical energy
What happens to gravitational potential energy as a basketball descends?
What happens to gravitational potential energy as a basketball descends?
- It increases
- It decreases (correct)
- It remains constant
- It transforms into electrical energy
In terms of work done, what happens when an object is moved up against gravity?
In terms of work done, what happens when an object is moved up against gravity?
- Negative work is done by the gravitational force (correct)
- Positive work is done by the gravitational force
- Work is done by the object itself
- No work is done by the gravitational force
According to the work-energy theorem, what does the work done by the net force on a particle equal?
According to the work-energy theorem, what does the work done by the net force on a particle equal?
When an object moves down in a gravitational field, what form of energy does it gain?
When an object moves down in a gravitational field, what form of energy does it gain?
How is the change in gravitational potential energy related to the work done by gravity?
How is the change in gravitational potential energy related to the work done by gravity?
What is the formula for calculating gravitational potential energy?
What is the formula for calculating gravitational potential energy?
Which quantity is conserved when only the force of gravity does work on a system?
Which quantity is conserved when only the force of gravity does work on a system?
What is the expression for calculating net work using the work-energy theorem?
What is the expression for calculating net work using the work-energy theorem?
If an object has a mass of 5 kg and is lifted to a height of 10 m, what is its gravitational potential energy?
If an object has a mass of 5 kg and is lifted to a height of 10 m, what is its gravitational potential energy?
Which law states that the total mechanical energy of a system remains constant when only conservative forces are at play?
Which law states that the total mechanical energy of a system remains constant when only conservative forces are at play?
How does the potential energy change as an object is lifted higher above the ground?
How does the potential energy change as an object is lifted higher above the ground?
What is the unit of work in the SI system?
What is the unit of work in the SI system?
When does work done by a force become negative?
When does work done by a force become negative?
What is the work done by a constant force acting at an angle of 60 degrees to the displacement?
What is the work done by a constant force acting at an angle of 60 degrees to the displacement?
If an object is lifted with a force of 5 N at a constant speed for a distance of 3 m, how much work is done?
If an object is lifted with a force of 5 N at a constant speed for a distance of 3 m, how much work is done?
At what angle between force and displacement would the work done be zero?
At what angle between force and displacement would the work done be zero?
When is work done by a system considered positive?
When is work done by a system considered positive?
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