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9702/51/M/J/12 UCLES 2012

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1 A fairground ride carries passengers in chairs which are attached by metal rods to a rotatingcentral pole, as shown in Fig 1.1. When the pole rotates with angular velocity , the rodsmake an angle to the vertical.

rotating pole

metal rod

Fig 1.1

It is suggested that cosis inversely proportional to 2.

Design a laboratory experiment, using a small object to represent an occupied chair, totest the relationship between and . You should draw a diagram, on page 3, showing thearrangement of your equipment. In your account you should pay particular attention to

(a) the procedure to be followed,

(b) the measurements to be taken,

(c) the control of variables,

(d) the analysis of the data,

(e) the safety precautions to be taken. [15]

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Diagram

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Defining theproblem Methods ofdata collection Method ofanalysis Safetyconsiderations Additionaldetail

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P5 Work 14 2072 (2)