ON21 P41 Q4 Damped Oscillating Trolley | Oct/Nov 2021 | Cambridge A Level 9702 Physics

9702/41/O/N/21: A trolley on a track is attached by springs to fixed blocks X and Y, as shown in Fig. 4.1. The track contains many small holes through which air is blown vertically upwards. This results in the trolley resting on a cushion of air rather than being in direct contact with the track. The trolley is pulled to one side of its equilibrium position and then released so that it oscillates initially with simple harmonic motion. After a short time, the air blower is switched off. The variation with time t of the distance L of the trolley from block X is shown in Fig. 4.2. #9702w21p41 #A2shmGraphsP4 #A2dampingP4 #Lv2 (a) Use Fig. 4.2 to determine: (i) the initial amplitude of the oscillations (ii) the angular frequency ω of the oscillations (iii) the maximum speed v0, in cm s–1, of the oscillating trolley. (b) Apart from the quantities in (a), describe what may be deduced from Fig. 4.2 about the motion of the trolley between time t = 0 and time t = 24 s. No calculations are required. (c) On Fig. 4.3, sketch the variation with L of the velocity v of the trolley for its first complete oscillation. #A2oscillation Playlist:    • Ch17 Oscillations | CAIE 9702 A2 Physics   ON21 Paper Discussion Playlist    • 9702 ON21 Papers CAIE Physics   Instagram Pocket Guide (  / etphysics  ) More Resources (https://9702-physics.blogspot.com/) Support us! (  / etphysics  ) Tuition/Tutoring inquiries: Email: suitlin@gmail.com Whatsapp: https://wa.me/60126679171 Recorded at MCKL #CambridgeALevelPhysics 9702_w21_qp41