BASIC MECHANICS

JEE Mains 2015 Guidance › Mechanics questions › BASIC MECHANICS

A solid sphere of mass m rolls down a inclined plane of height h . find the rotational kinetic energy of sphere ???

plzz m weak at this topixc so plzzz post full solution??

#Physics #Mechanics

UP 0 DOWN 0 0 8
Post on FacebookPost anonymously?

8 Answers

1

pranav ·2010-02-05 05:08:59

plzzz someone solve it/???

UP 0 DOWN 0
Post on FacebookPost anonymously?

1

ABHI ·2010-02-05 05:11:45

rotational energy will be 1/2Iw²

UP 0 DOWN 0
Post on FacebookPost anonymously?

1

pranav ·2010-02-05 05:14:00

final aswer yaar plzz.....formula i also knew but wat s the fibnal ans?

UP 0 DOWN 0
Post on FacebookPost anonymously?

1

pranav ·2010-02-05 05:18:17

?????????????????????????plzzz guyssss

UP 0 DOWN 0
Post on FacebookPost anonymously?

1

Anirudh Kumar ·2010-02-05 05:45:59

v^{2}= \frac{2gh}{1+\frac{k^{2}}{R^{2}}}

where k= radius gyration .
it's derivation is given in Hc verma i think?

UP 0 DOWN 0
Post on FacebookPost anonymously?

1

pranav ·2010-02-06 00:21:25

yaar someone solve it and show ..............i am getting

25mgh .......................... but answer is given

27mgh

in dc pandey the question is ....given

UP 0 DOWN 0
Post on FacebookPost anonymously?

1

pranav ·2010-02-06 04:28:53

dc pandey workbook exercise in bween ones (9.6)

UP 0 DOWN 0
Post on FacebookPost anonymously?

1

satyajeet ·2010-02-08 21:37:07

Rotational KE is given by 12Iw²..
Bt find w first...

mgh=1/2mv²+1/2Iw²

substituting I=25mr², and v=wr, we get w=10gh7r²

Now KE_rot=12Iw²=12.25mr².10gh7r²=27mgh

UP 0 DOWN 0
Post on FacebookPost anonymously?

Your Answer

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