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You have chosen to download the "Weigh the World" Challenge 2005 worksheet for schools. This is a two page worksheet describing how to perform a simple pendulum experiment in class to determine the mass of the Earth. If you have any difficulties downloading it please contact by email.

We would be pleased for you to inform us of the value you obtain so that we can compare it with the result we get at Schiehallion and also with the values obtained for the mass of the Earth by other schools.

The size of the worksheet is around 500 kB. It may take a moment to download.

Please answer three quick questions before downloading the worksheet. These are not required.

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