Recent content by lfwake2wake

1. Question A large plate moves with speed (v.o) over a stationary plate on a layer of oil of thickness (d) and viscosity (u). If the velocity profile is that of a parabola, with the oil at the plates having the same velocity as the plates, what is the shear stress on the moving plate from the...

The box has a definite volume of V and a definite amount of mass inside (n). If the gas starts off with a volume of V, Pressure of Po, Temp of To, and mass of n, use the Ideal Gas Law to solve for a change in volume and respective pressure/temperature changes. PV=nRT where R is the ideal gas...

[b]1. A large plate moves with speed (v.o) over a stationary plate on a layer of oil of thickness (d) and viscosity (u). If the velocity profile is that of a parabola, with the oil at the plates having the same velocity as the plates, what is the shear stress on the moving plate from the oil...

Thank you, that makes a lot of sense with the rubber band example.

Anybody have any ideas?

I know that there has already been a thread on the physics of waterskiing, but I don't think most people know what wakeboarding is. I am doing a research project on the physics of wakeboarding and am having some trouble grasping some of the key concepts. For those of you who don't know...

Homework Statement Your friend has just been in a traffic accident and is trying to negotiate with the insurance company of the other driver to pay for fixing his car. he believes that the other car was speeding and therefore the accident was the other driver's fault. He knows that you...

I figured it out...Insted of adding the accelerations, they needed to be subtracted as Fx is the force of the wind in relation to the motion of the skier. Thanks for the help.

Yes, that definitely should be sin, other than that, does it look correct, I feel like I'm missing something on such a basic problem.

Im sure you know this, but there is no (d), the answer i gave for (b) was a continuation of (a).

Homework Statement A 54 kg skier skis directly down a frictionless slope angled at 12° to the horizontal. Choose the positive direction of the x-axis to be downhill along the slope. A wind force with component Fx acts on the skier. What is Fx if the magnitude of the skier's velocity is (a)...