Compassvale 2024 Sec4Exp Prelim Phy P2

[Turn over COMPASSVALE SECONDARY SCHOOL Secondary Four Express / Five Normal (Academic) Preliminary Examination 2024 NAME CENTRE NUMBER S CLASS INDEX NUMBER PHYSICS 6091/02 Paper 2 Structured and Free Response 26 August 2024 1 hour 45 minutes Candidates answer on the Question Paper No Additional Materials are required. READ THESE INSTRUCTIONS FIRST Write your name, class, Centre number and index number on all the work you hand in. Write in dark blue or black pen. You may use an HB pencil for any diagrams or graphs. Do not use staples, paper clips, glue or correction fluid. Section A Answer all questions. Write your answers in the spaces provided. Section B Answer one question. Write your answers in the spaces provided. Candidates are reminded that all quantitative answers should include appropriate units. The use of an approved scientific calculator is expected, where appropriate. Candidates are advised to show all their working in a clear and orderly manner, as more marks are awarded for sound use of Physics than for correct answers. The number of marks is given in brackets [ ] at the end of each question or part question. This document consists of 19 printed pages and 1 blank page. Set by: Mr E Chng

2 Section A Answer all questions. 1 Fig. 1.1 shows an oil tank. A small crack appears in an oil tank and a stream of oil is pushed out through the crack. The oil hits the floor at P where a puddle of oil starts to form. Fig. 1.1 The gravitational field strength is 10 N/kg. Atmospheric pressure is 101 kPa. (a) The density of the oil is 950 kg/m3. Calculate the total pressure exerted on the oil at the level of the crack. total pressure = ........................................ [2] (b) As time passes, the point where the oil hits the floor moves away from P. State how the oil moves and explain why this happens. ………………………………………………………………………………………………….............. ………………………………………………………………………………………………….............. ………………………………………………………………………………………………….............. …………………………………………………………………………………………………......... [2] [Total: 4] oil 3.0 m oil tank crack stream of oil P 3.5 m

3 [Turn over 2 Fig. 2.1 shows a painter standing on a wooden plank, directly above the right-hand support. Fig. 2.1 The gravitational field strength is 10 N/kg and the mass of the plank is 24 kg. (a) Determine the density of the wood from which the plank is made. density = ........................................ [2] (b) The centre of gravity of the plank is in the middle of the plank at a distance of 1.3 m from each of the supports. By considering the moments about the right-hand support, determine the value of the force F.