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When is work done positive, negative and zeropls solve this fast |
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Answer» E WORK :the work done on an object is said to be positive work when force and DISPLACEMENT are in same direction.example: When an object moves on horizontal surface,force and displacement ACTS in FORWARD direction. So,work done is positive.NEGATIVE WORK:The work done is said to be negative work when force and displacement are in opposite direction.example: When an object is thrown upwards,the force CTS in downward direction whereas displacement acts in upward direction.ZERO WORK:The work done is said to be zero work when force and displacement are perpendicular to each other or when either force or displacement is zero.example: When we hold an object and walk,the force acts in downward direction whereas displacement acts in forward direction.please mark as brainliest answer |
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