![]() The short of it is, if you are careful about labeling your forces, then you don't need to know the weight of the hanging mass, or even calculate the tension force. Hint: To derive the relationship between angles theta and phi, you first must write the equations of equilibrium for the pulley. Express your equation for theta in terms of phi. ![]() If you know what all the forces sum up to, then you can use some pictorial vector math and determine the unknown angle $\theta$ in terms of $\phi$ without doing math. Question: Find the relationship between angles theta and phi using the equations of equilibrium and solve for theta. Use Newton's laws to relate your three forces. We have arrived at this expression this relation between the momentum of the. If this is true, then the tension force in the rope is uniform throughout. We have been discussing the Compton effect let we first recapitulate. Be sure all of your forces refer to forces on the pulley, not forces at some other location (such as on the bottom-right anchor, even if they are equal in magnitude. The Compton scattering of a gamma-ray from an essentially free electron is depicted by the following. 02 A, the Compton shift is very small, whereas for high energy photons with 0.02 A, the wavelength of the scattered radiation is always of the order of 0.02 A, the Compton wavelength. I think your labeling of forces is making this harder than it ought to be. (1) is called the Compton wavelength and has the value: h/mc 2.426×1010cm.
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