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Define positive, negative8zero wore |
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Answer» Answer: POSITIVE work: when force and displacement are in the same direction, the work performed on an OBJECT is said to be positive work. Example: When a body moves on the HORIZONTAL surface, force and displacement act in the forward path. The work is done in this CASE known as Positive work. Negative work: Negative work is performed if the displacement is opposite to the direction of the Force applied. Example: Work was done the gravity on a ROCKET going perpendicular upwards. Zero work: When force and displacement are perpendicular to each other, or when force or displacement is zero. Example: When we hold an object and walk, the force acts in a downward direction whereas displacement acts in the forward direction. Explanation: |
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