How do you represent graphically work done by a constant force and by variable force? Explain
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Answers
Answer:
Work is a scalar quantity and has magnitude but no direction. constant angle θ from the straight line path of the particle as shown as Fig., then, The graphical representation of work done by a constant force is shown in Fig. dw = F cos θ.
Answer:
Question
Explain with graphs the difference between work done by a constant force and by a variable force.
SOLUTION

It is interesting to know that the forces we encounter everyday are mostly variable in nature which is defined as a variable force and we rarely encounter a constant force.
A force is said to perform work on a system if there is displacement in the system upon application of the force in the direction of the force. The work done by a constant force of magnitude F, as we know, that displaces an object by Δx can be given as,
W = F.Δx
In case of a variable force, the is calculated with the help of integration. For example, in the case of a spring, the force acting upon any object attached to a horizontal spring can be given as
Fs = -kx, where k is the spring constant and x is the displacement of the object attached.