Complete GRAVITATION in 34 Minutes | Class 11th NEET
Competition Wallah・2 minutes read
Gravity is described in terms of Newton's law, with gravitational force being central, conservative, and inversely proportional to distance. Various formulas and concepts related to gravity, including escape velocity, energy calculations, and satellite orbits, are discussed in detail.
Insights
- Gravity follows Newton's law, where the force between two masses is determined by their product divided by the square of the distance between them, always attractive and inversely proportional to distance.
- Various aspects of gravity, including gravitational field intensity, centripetal force in circular motion, and escape velocity, are explored, shedding light on the intricate relationship between mass, distance, and energy in gravitational interactions.
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Recent questions
What is the formula for gravitational force between two masses?
The formula for gravitational force between two masses (m1 and m2) is gm1m2 / r², where g is the gravitational constant and r is the distance between the centers of the masses.
How does gravity act in circular motion?
Gravity acts as the centripetal force in circular motion, following the formula F = gm1m2 / (2r)², where R is the distance between the masses.
What is the acceleration due to gravity at the equator compared to the poles?
The acceleration due to gravity at the equator is less than at the poles due to the Earth's rotation. If the angular speed is increased 17 times, the effective acceleration due to gravity becomes zero.
How does Earth's gravity change as you move away from the surface?
Earth's gravity decreases as you move away from the surface, with the value of the gravitational constant G being higher in space due to the lack of Earth's mass.
What is the escape velocity from Earth's surface?
The escape velocity from Earth's surface is 11.2 km/s, and the total energy of an object to escape Earth's surface is zero.
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