RI 2023 Y5 H2 Phy Promo Sect C

© Raffles Institution 9749 Name: ( ) CT Group: 24S0 RAFFLES INSTITUTION 2023 YEAR 5 PROMOTIONAL EXAMINATION 2 October 2023 H2 PHYSICS RAFFLES INSTITUTION RAFFLES INSTITUTION RAFFLES INSTITUTION RAFFLES INSTITUTION RAFFLES INSTITUTION RAFFLES INSTITUTION RAFFLES INSTITUTION RAFFLES INSTITUTION RAFFLES INSTITUTION RAFFLES INSTITUTION RAFFLES INSTITUTION RAFFLES INSTITUTION RAFFLES INSTITUTION RAFFLES INSTITUTION RAFFLES INSTITUTION RAFFLES INSTITUTION RAFFLES INSTITUTION RAFFLES INSTITUTION RAFFLES INSTITUTION RAFFLES INSTITUTION RAFFLES INSTITUTION RAFFLES INSTITUTION RAFFLES INSTITUTION RAFFLES INSTITUTION RAFFLES INSTITUTION RAFFLES INSTITUTION RAFFLES INSTITUTION RAFFLES INSTITUTION RAFFLES INSTITUTION RAFFLES INSTITUTION RAFFLES INSTITUTION RAFFLES INSTITUTION RAFFLES INSTITUTION RAFFLES INSTITUTION RAFFLES INSTITUTION RAFFLES Section C INSTRUCTIONS TO CANDIDATES Write your name, index number and CT Group. Write your answers to Section C in the spaces provided on the question paper. You are advised to write all your workings and answers clearly. Marks may be deducted for unclear workings. For Examiner’s Use Section C 6 / 15 7 / 15 This document consists of 8 printed pages.

2 © Raffles Institution 9749 [Turn over Section C (30 marks) 6 A body of mass 2.6 kg is oscillating in simple harmonic motion between points P and Q. The variation with displacement x from point P of the kinetic energy of the body is shown in Fig. 6.1. Fig. 6.1 (a) State the displacement x of the equilibrium position of the body. [1] (b) Calculate the maximum speed of the body. maximum speed = −1m s [2] (c) Calculate the maximum acceleration of the body. maximum acceleration = −2m s [2] 3.2 -0.30 -0.20 -0.10 0.00 0.10 0.20 0.30 x / m P Q energy / J

3 © Raffles Institution 9749 [Turn over (d) Calculate the period of the motion. period = s [2] (e) On Fig. 6.1, sketch the variation with x of the potential energy of the body. [1] (f) The body is at point P at time 0 st = . On Fig. 6.2, sketch the variation with t of the potential energy of the body from 0 st = to 0.80 st = . Fig. 6.2 [2] t / s 0.00 0.20 0.40 0.60 0.80 potential energy / J

4 © Raffles Institution 9749 [Turn over (g) On Fig. 6.3, sketch the variation with x of the velocity v of the body. Fig. 6.3 [2] (h) The body i