Yes. We only care about the work done by the tension force.veronicak5678 said:I understand the concept, but I am still having trouble setting up the function. I guess I can disregard normal force, so the only force doing work is the tension.
At any given position, the infinitesimal displacement will be Rdθ.So the work of tension is Force of T * displacement * cos angle. Since the tension is always in the same direction as the displacement, the angle will always be cos 0, or 1, so I can leave that out. The displacement will be R * angle.
Since the speed is constant, the tension must be just enough to balance out the tangential component of the weight. Find that as a function of θ.I don't know how to figure out the force of the tension at any given point since the weight is sometimes pulling down (like at 0 degrees) and sometimes at a right angle, where I think it should then be doing no work.
Yep.veronicak5678 said:So the work done is just wR [sin theta]0 to pi/2 =
wR sin(pi/2) - wR sin(0) = wR ?
The speed doesn't change.veronicak5678 said:Also, how can I check using the conservation of energy if I don't know the speed?
Work done without using the Conservation of Energy refers to the process of performing a task or exerting a force, without taking into account the principle of energy conservation. This means that energy is not conserved or transferred, and the work done is not equal to the change in energy of the system.
Traditional work involves the transfer or conversion of energy from one form to another, while work done without using the Conservation of Energy does not involve any change in energy. In traditional work, the work done is equal to the change in energy of the system, but in the absence of Conservation of Energy, this is not the case.
Yes, work can technically be done without using the Conservation of Energy, but it is not a sustainable or accurate approach. The Law of Conservation of Energy is a fundamental principle in physics, and ignoring it can lead to incorrect results and misunderstandings about the behavior of energy.
One example of work done without using the Conservation of Energy is pushing a stationary object on a frictionless surface. In this scenario, no energy is transferred or conserved, and the work done is not equal to the change in energy of the object. Another example is a person holding a weight at a constant height, as there is no change in energy even though work is being done.
While work done without using the Conservation of Energy is not a valid approach in physics, it is still important to understand it as it can help us identify potential flaws or inaccuracies in our calculations. Additionally, it can also help us appreciate the significance of the Law of Conservation of Energy and how it governs the behavior of energy in the universe.