Two satellites of same mass orbit Earth at radii r and 2r. Ratio of their kinetic energies:
A1:1
B4:1
C1:2
D2:1
Answer & Solution
Correct answer: D. 2:1
KE = GMm/(2r). KE ∝ 1/r. KE₁/KE₂ = (2r)/r = 2. So 2:1.
Related questions
Integration: ∫ tan(x) dx =If f(x) = x³ - 3x² + 2, find x where local maximum occurs:For y = cos x, y'' + y =Find eigenvalues of [[3, 1], [1, 3]]:In a triangle ABC, if a = 2, b = 3, C = 60°, find c (using cosine rule):sin(75°) =Roots of equation x² - 5x + 6 = 0:Distance from point (1, 2, 3) to plane x + y + z - 6 = 0: