NEET · Physics · Gravitation doubts

6 doubts found

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NEETPhysicseasy

What does “Universal law of gravitation” actually mean in Gravitation, and why does it matter for NEET?

every two masses attract with F = G·m₁m₂/r² along the line joining them.

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NEETPhysicsmedium

I keep getting “Universal law of gravitation” questions wrong in Gravitation. What's the trap?

forgetting the force depends on 1/r² — doubling the distance quarters the force.

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NEETPhysicseasy

What does “Acceleration due to gravity g” actually mean in Gravitation, and why does it matter for NEET?

g = GM/R² at a planet's surface; it decreases with both altitude and depth.

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NEETPhysicsmedium

I keep getting “Acceleration due to gravity g” questions wrong in Gravitation. What's the trap?

treating g as a fixed 9.8 everywhere, including in orbit.

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NEETPhysicseasy

What does “Gravitational potential energy” actually mean in Gravitation, and why does it matter for NEET?

for large distances PE = −GMm/r (negative, zero at infinity), not mgh.

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NEETPhysicsmedium

I keep getting “Gravitational potential energy” questions wrong in Gravitation. What's the trap?

using mgh far from the surface, where it no longer holds.

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