Fuchun Sec 2022 4NA Science Physics Prelim Paper 2

READ THESE INSTRUCTIONS FIRST Write your Centre number, index number, name and class on all the work you hand in. Write in dark blue or black pen on both sides of the paper. You may use an HB pencil for any diagrams or graphs. Do not use staples, paper clips, glue or correction fluid. Answer all questions in Section A and any two questions in Section B. The use of an approved scientific calculator is expected, where appropriate. In calculations, you should show all the steps in your working, giving your answer at each stage. You are advised to spend no longer than 30 minutes on Paper 1. You may proceed to answer Paper 2 as soon as you have completed Paper 1. At the end of the examination hand in your answers to Paper 1 and Paper 2 separately. The number of marks is given in brackets [ ] at the end of each question or part question. For Examiner’s Use Section A /14 Section B /16 TOTAL /30 Setter: Mr LH Liang This document consists of 12 printed pages and no blank page. FUCHUN SECONDARY SCHOOL PRELIMINARY EXAMINATION 2022 SECONDARY FOUR NORMAL (ACADEMIC) CANDIDATE NAME CLASS CENTRE NUMBER S INDEX NUMBER SCIENCE Paper 2 Physics 5105/02 01 August 2022 Papers 1 and 2: 1 hour 15 minutes Candidates answer on the Question Paper. No Additional Materials are required.

FCSS S4N/Sc(Physics)/Prelim/2022 2 Section A Answer all the questions in the spaces provided. 1 The table gives details of some units of energy. Complete the table by filling in the blank spaces. unit symbol multiple of the SI unit (J) joule J 1 kilojoule kJ gigajoule 1 000 000 000 mJ 0.001 [2] 2 The diagram below shows the location of the centre of gravity of a man when he assumes different positions 1, 2 and 3. Position 1 2 3 (a) Which of positions, 1, 2 or 3, is the most stable? position ……………………. [1] (b) Explain your answer to (a). …………………………………………………………………………………………………….. ……………………………………………………………………………………………… [1]

FCSS S4N/Sc(Physics)/Prelim/2022 3 3 A cyclist applies a vertical force F of 110 N on a pedal of his bicycle as shown. As he travels along, the pedal moves through a circle of radius 8 cm. For a pedal in the position shown, the line of action of force F, is 5.0 cm from the pivot. (a) Calculate the moment of force, F, about the pivot, at that instant. moment = ……………………. Ncm [1] (b) The pedal moves from position A to position B as shown in the figure. Explain why the force applied at A will have a different effect from the same force applied at B. ..……..………….….………...…………………………………………………………………… ……..………….….………...………………………………………………………………. [1]

FCSS S4N/Sc(Physics)/Prelim/2022 4 4 A vibrating bar is positioned so that it touches the surface of the wa