A chair of mass 15.0 kg is sitting on the horizontal floor; the floor is not frictionless. You push on the chair with a force F = 39.0 N that is directed at an angle of 35.0∘ below the horizontal and the chair slides along the floor.   Use Newton's laws to calculate the normal force that the floor exerts on the chair.

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Q: What is the purpose unit of vector in real life?

A: Generally there are two types of physical quantities as scalar and vector.

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A: Free body diagram,

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Q: Ꮎ Chain Fixture Rope

A: Here we will find the work done on fixture

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Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.