what is work theorem ?
Answers
heya, buddy !!
➦ The Work is the term that is used for the displacement done by any force in physics. In other words, we can say that work and energy are the two essential elements to understand any physical movement. Well, here we will discuss the work-energy theorem, limitations, and work energy theorem examples. To complete the work, energy is needed, and hence in this theorem, we will know the relation between energy and work. Work relates to displacement, and displacement relates to kinetic energy. The work energy theorem affirms that the work done on any object is comparable to the difference of kinetic energy of the object. So, according to the theorem statement, we can define the work energy theorem as follows.
Kf – Ki = W
Where,
Kf = Final kinetic energy
Ki = Initial kinetic energy
W = Net work done on the object.
According to Work energy theorem,
Work (completed by all kind of energy or forces) = Change (Difference) in Kinetic Energy
Work Energy Theorem Formula
Wg + WN + Wf =Kf – Ki
Where Wg = work done by gravity
WN = work done by a reasonable force
Wf = work done by friction
Kf = final kinetic energy
Ki = initial kinetic energy
Work Done By A Constant Force
The constant force will result in constant acceleration. Let's take the constant acceleration as 'a.'
Work done by a constant force
From the motion equation, we get
v2 = u2 + 2as…….. equation (1)
Therefore,
2as = v2 – u2 ………… equation (2)
In equation 2, multiply both the sides with ‘m’ mass.
(ma).s = (mv2–mu2)2
Mass X Acceleration = Force
F.s = (mv2–mu2)2…………….. equation (3)
Comparing the above equations (2) and (3), we get,
Work done by force (F) = F.s
Where's' is the displacement of the body
HAVE A NICE DAY <3