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Hold Still Please

Age 16 to 18
Challenge Level Yellow star
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Don't forget that the total vector force on a particle equals the vector sum of the forces from all other particles.

For an unconstrained particle not to move, the total force on the particle must equal the zero vector.

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The NRICH Project aims to enrich the mathematical experiences of all learners. To support this aim, members of the NRICH team work in a wide range of capacities, including providing professional development for teachers wishing to embed rich mathematical tasks into everyday classroom practice.

NRICH is part of the family of activities in the Millennium Mathematics Project.

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