Question

Q. WHAT DO YOU MEAN BY POSITIVE, NEGATIVE AND ZERO WORK DONE. GIVE AT LEAST ONE EXAMPLE OF EACH CASE.

Answer 1

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.
please mark as brainliest answer

Answer 2

The specification is summarized downwards according to another questionnaire asked.

Explanation:

Positive Work done:

• Whenever the influence works throughout the direction of wave propagation, that function was said to have been positive.

Example:

Whenever an affected by globalization on something like a flat surface, it works in almost the same position with a friction force. Projects did, then is positive.

Negative work done:

• Whenever the force works throughout the reverse direction of wave propagation, that activity was said to have been negative.

Example:

This same gravitational force has always been in the downward motion when an artifact is forced upwards while displacement works in a sideways path.

Zero work done:

• This same job on either the artifact seems to be zero even though no displacement was caused.

Example:

The pressure occurs throughout the downward motion when designers carry an artifact as well as move, while displacement operates throughout the forward path.

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