What is the value of tangential acceleration in U.C.M.? iii. The surface tension of water at 0℃ is 75.5 dyne/cm. Find surface tension of water at 25℃. [ for water = 0.0021/℃]
Answers
Answered by
1
In uniform circular motion (U.C.M), It's angular valocity is constant. a = dw/dt. but, w = constant. ∴ a = 0. Thus, the value of tangential acceleration in uniform circular motion is zero.
t 1 = 0⁰C
t 2 = 25⁰C
α = 0.0027/⁰C
T = T0 (1 – α∆t)
= T0 [1 – α (t2 – t1 )]
T = T0 [1 – α (t2 – t1 )]
T = 70 [1 – 0.0027 (25 – 0)]
= 70 [1 – 0.0027 × 25]
= 70 × 0.9325
∴ T = 65.275 dyne/cm
please mark me brain mark list
Similar questions