10 examples of positive work done ,10 examples of negative work done, 10 zero work done10 examples of work done explain briefly
Answers
Here is a list of some examples of work done. Work done is divided into: a) Positive Work done and b) Negative Work done a)Examples of positive work done 1. Kicking a football 2. Moving a chair 3. Throwing a stone 4. Riding a bicycle 5. Doctors moving a patient in wheel chair 6. striking a pen into another pen 7. Riding a skateboard 8. Pushing and moving a table 9. Cutting a fruit with knife 10. A car moving forward b)Examples of Negative Work done 1. Someone pushes you 2. You are pulled from behind when you try to move front 3. In Arm wrestling, when someone is defeating you. 4. In Tug of War when opponent team pulls hard. 5. Pushing a car up a hill, when you slip back. 6. Trying to catch a heavy object, hands move down 7. When you jump, work done by gravity is negative 8. After you press a spring, it relaxes. 9. Trying to kick a moving football, work done by ball is negative 10. A car moving on road, work done by friction is negative Please mark my answer as brainliest
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 same 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 of gravity is in downward direction whereas displacement acts in upward direction.
ZERO WORK: The work done is said to be zero 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.