gravitation

IIT JEE Preparation › Mechanics questions › gravitation

1)is this statement correct
Gravitational potential of earth at every place on it is negative

it will be negative if we take refrence as infinity Won't it be changed if we change the refrence point

2)Assertion: Even when the orbit of satellite is elliptical its plane of rotation passes through the centre of earth
Reason:This is in accordance with principle of conservation of angular momentum

#Physics #Mechanics

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msp ·2009-02-20 18:59:42

for the 2nd question dont get confused just leave it becos it is not included in the jee syllabus.

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msp ·2009-02-20 19:04:26

for the first qn

i think assertion is rite but reason is rong.

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skygirl ·2009-02-20 19:27:17

1) yes it will change if we change the reference point.

2) [12]

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Philip Calvert ·2009-02-20 21:34:33

for 2 you'll have to think [12]me too thinking

if the plane does not pass through the center then there will be a torque na.........

so looks alright in the first look.....

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Basic Integral Calculus Operators Symbols Matrix Cases

√ √ || {} [] () → ~ ^ x x x → → ln log lg lim lim cos sin tan cot arcsin arccos arctan

∫ ∫ ∫ ∫ ∫ ∬ ∬ ∬ ∬ ∬ ∭ ∭ ∭ ∭ ∭ ⨌ ⨌ ⨌ ⨌ ⨌

∑ ∑ ∑ ∑ ∑ ∮ ∮ ∮ ∮ ∮ ∏ ∏ ∏ ∏ ∏ ∐ ∐ ∐ ∐ ∐

+ - × ÷ ± ∓ = ∪ ∩ ≠ ∼ ≈ ∅ ∀ ∃ ∈ ∋ ∝ ≤ ≥ ≃ ≅ ≡ < > ≪ ≫ ⊂ ∉ ⊃ ⊆ ⊇ ⇒ ⇐ ⇔ ⇒ ⇐ ⇔ ⇑ ⇓ ⇕ → ← ↔ → ← ↔ ↑ ↓ ↕ ↖ ↗ ↘ ↙ ↪ ↩ ⇀ ↼ ⇁ ↽

° ∂ ∞ α β γ δ θ λ μ ν ξ π ρ σ φ ω ε ƒ κ τ υ Γ Δ Λ Σ Π Ω

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gravitation

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