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tour de force noun [S]. âº an âachievement or âperformance that âshows âgreat âskill and âattracts âadmiration: a âtechnical/âmusical/âpolitical âtour de âforce The âpainting/âbook/âfilm is a âtour de âforce.
Remember, a force is either a push or pull. The 6 are: normal force; applied force; frictional force; tension force; spring force; resisting force; Let's investigate how these forces can be seen in our lives. Normal Force. A book resting on a table has the force of gravity pulling it toward the Earth. But the book is not moving or accelerating, so there must be opposing forces acting on the book. This force is caused by the table and is known as the normal force.