Question

22 23

m object of mass 8.0 kg is attached to an ideal massless spring and allowed to hang in the earth's gravitational field. The spring stretches 3.6 cm before it reaches its equilibrium position. this system is allowed to oscillate, what will be its frequency? A) 2.6 Hz B) 0.0045 Hz C) 0.67 HZ D ) 16 Hz E) 2.1 Hz 23) When a weight is hanging from a light vertical string, the speed of pulses on the string is v. lfa second weight W is added without stretching the string, the speed of pulses on this string will now become E) D) v/2. . C) 12. B) 2v. A)

Answer 1

WA 2) к- Еття стін ат m-s man attached to opisy mo 8.0 x- extensim due to Cond x2 3.6 cin= 3.6 We know at he willibsium ka=mg So = K * 8*9.81 2180 Mfus 31/100 UNL Frequency is given by Hata honen i = 2.6 Hz 2480 option A

6 m- mans string - length in thing We wad attached to string spead of waure is givenky - Pensim in V stiri 1. canvis F3] 2 W mil 0:0 m ET2w w ya viz optimere opbim ©