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Gravitational field intensity, gravitational potential, gravitational potential energy Video Lecture | UPSC Physics Optional (Crash Course)

FAQs on Gravitational field intensity, gravitational potential, gravitational potential energy Video Lecture - UPSC Physics Optional (Crash Course)

1. What is the formula for calculating gravitational field intensity?
Ans. The formula for calculating gravitational field intensity is given by \( g = \frac{F}{m} \), where \( g \) is the gravitational field intensity, \( F \) is the gravitational force, and \( m \) is the mass of the object.
2. How is gravitational potential related to gravitational field intensity?
Ans. Gravitational potential is related to gravitational field intensity through the equation \( V = -\frac{GM}{r} \), where \( V \) is the gravitational potential, \( G \) is the gravitational constant, \( M \) is the mass of the object creating the field, and \( r \) is the distance from the object.
3. How is gravitational potential energy calculated?
Ans. Gravitational potential energy is calculated using the formula \( PE = mgh \), where \( PE \) is the gravitational potential energy, \( m \) is the mass of the object, \( g \) is the acceleration due to gravity, and \( h \) is the height of the object above a reference point.
4. What is the relationship between gravitational potential and gravitational potential energy?
Ans. Gravitational potential energy is the energy an object possesses due to its position in a gravitational field, while gravitational potential is the potential energy per unit mass at a point in the field. The relationship between them is given by \( PE = mV \), where \( PE \) is the gravitational potential energy and \( V \) is the gravitational potential.
5. How does the gravitational potential energy change as an object moves in a gravitational field?
Ans. As an object moves in a gravitational field, its gravitational potential energy changes depending on its position relative to the reference point. When the object moves closer to the source of the gravitational field, its potential energy decreases, and when it moves away, its potential energy increases.
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