ANKIT answer

JEE Main Answers › Mechanics questions › ANKIT answer

A horse pulls a wagon of 5000kg from rest against a constant resistance of 90N.The pull exerted initially is 600N and it decreases uniformly with the distance covered to 400N at adistance of 15m from the start.the velocity of the wagon at this point is -

#Physics #Mechanics

UP 0 DOWN 0 0 3
Post on FacebookPost anonymously?

3 Answers

1

ANKIT MAHATO ·2009-07-09 13:10:42

ruk ja room mein cockroach ghus aaya hai ... pehle usko maarne de tarun
- ankit

UP 0 DOWN 0
Post on FacebookPost anonymously?

1

ANKIT MAHATO ·2009-07-10 09:48:55

i have got the solution i am posting it wait ...

UP 0 DOWN 0
Post on FacebookPost anonymously?

1

ANKIT MAHATO ·2009-07-10 09:57:31

first we shuld note that - 'decreases uniformly with the distance covered'

600 - 0 metre
400 - 15 metre

uniform decrease per metre = 200 / 15 = 40/3

force at a particular distance s is :

(600 - (40/3) * s) - 90 (resistive force) = 5000 * a

(600 - (40/3) * s) - 90 (resistive force) = 5000 * v dv/ds

ab integrate karo .. LHS limits : 0 to 15 and RHS unit 0 to v
u will get

[ 51s - (2/3)s² ]₀¹⁵ = 250v² | ₀ ^v

solve ang get v = 1.568.... m/s

- ANKIT

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