A pendulum of length 105 cm is suspended from O. Its end swings 3° on either side of the vertical from A to B.?

Science & Mathematics by Anonymous 2018-05-18 11:08:35

Social Science

3 answers

Taking π = , calculate the length of the arc AB.

Anonymous

θ = 6° × π/180 = π/30 radian r = 105 arc length = rθ = 11 cm
Anonymous

"Taking π = , " ?? now that is strange. the arc length is just a portion of the circumference, 6/360 of it. C = 2πr so arc = (6/360)(2π)(105) = π(105/30) = 3.5π
Anonymous

. ArcLength = 2πr * ( θ/360 ) = 2* π *105 * 2(3°)/360° ≈ 11 cm ━━━━