Question

Explain positive,negative and zero work

Answer 1

Answer:

POSITIVE 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.

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Answer 2

$\huge\red{Answer\ :}$

$\huge\green{POSITIVE\ WORK\ :}$

The work done on an object is said to be positive work when force and displacement are in same direction.

$\rm\blue{Example\ :}$

When an object moves on horizontal surface,force and displacement acts in forward direction. So,work done is positive.

$\huge\green{NEGATIVE\ WORK\ :}$

The work done is said to be negative work when force and displacement are in opposite direction.

$\rm\blue{Example\ :}$

When an object is thrown upwards,the force CTS in downward direction whereas displacement acts in upward direction.

$\huge\green{ZERO\ WORK\ :}$

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.

$\rm\blue{Example\ :}$

When we hold an object and walk,the force acts in downward direction whereas displacement acts in forward direction.

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$\huge\purple{please\ mark\ as\ brainliest\ answer }$