Answer
Verified
376.5k+ views
Hint: This question calls for the knowledge of the concept of work and its properties. Work is said to be done on an object, when force applied on the object causes the object to move. Work is a scalar quantity, it can be positive, negative or zero.
Complete answer:
Work is a physics term that describes the energy transfer that happens when an object is displaced over a distance by an external force that is applied in at least part of the displacement direction. Work can be calculated by multiplying the length of the path by the portion of the force acting along the path if the force is constant.
Positive work: The work done on an object is said to be positive work when the force and displacement are in the same direction. Example: A man pushing a car forward by applying force results in forward movement of car. In this case, the work is referred to as positive work.
Negative work: Negative work is done when the displacement is in the opposite direction of the applied force.For instance, on a rocket travelling perpendicularly upwards, work was done using gravity.
Zero work: When force and displacement are perpendicular to one another or when neither force nor displacement exists. When we move while having an object in our hands, the force acts in a downward direction, while displacement acts in a forward direction.
Note: There is no work, as described in this context, unless the object is displaced in some way and a part of the force is applied along the direction the object is moved. Since there is no displacement, holding a heavy object stationary does not shift energy to it.
Complete answer:
Work is a physics term that describes the energy transfer that happens when an object is displaced over a distance by an external force that is applied in at least part of the displacement direction. Work can be calculated by multiplying the length of the path by the portion of the force acting along the path if the force is constant.
Positive work: The work done on an object is said to be positive work when the force and displacement are in the same direction. Example: A man pushing a car forward by applying force results in forward movement of car. In this case, the work is referred to as positive work.
Negative work: Negative work is done when the displacement is in the opposite direction of the applied force.For instance, on a rocket travelling perpendicularly upwards, work was done using gravity.
Zero work: When force and displacement are perpendicular to one another or when neither force nor displacement exists. When we move while having an object in our hands, the force acts in a downward direction, while displacement acts in a forward direction.
Note: There is no work, as described in this context, unless the object is displaced in some way and a part of the force is applied along the direction the object is moved. Since there is no displacement, holding a heavy object stationary does not shift energy to it.
Recently Updated Pages
How many sigma and pi bonds are present in HCequiv class 11 chemistry CBSE
Mark and label the given geoinformation on the outline class 11 social science CBSE
When people say No pun intended what does that mea class 8 english CBSE
Name the states which share their boundary with Indias class 9 social science CBSE
Give an account of the Northern Plains of India class 9 social science CBSE
Change the following sentences into negative and interrogative class 10 english CBSE
Trending doubts
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
The Equation xxx + 2 is Satisfied when x is Equal to Class 10 Maths
In Indian rupees 1 trillion is equal to how many c class 8 maths CBSE
Which are the Top 10 Largest Countries of the World?
How do you graph the function fx 4x class 9 maths CBSE
Give 10 examples for herbs , shrubs , climbers , creepers
Difference Between Plant Cell and Animal Cell
Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE
Why is there a time difference of about 5 hours between class 10 social science CBSE