Recent content by Mr. Sinister

Transverse wave problem... It's a doozy! Homework Statement A certain transverse wave is described by the equation, y(x,t)=(2 m) sin[(174.5 s -1)t - (22.44 m-1) x]. What is the frequency,wave's period, wavelength, and wave speed? Homework Equations v=wavelength * f= wavelength/T...

I mean like a number for the center of mass or something?

Does this have something to do with the center of mass?

Homework Statement A solid cylinder of 24 cm radius is postioned on a frictionless plane inclined at 30 degrees above horizontal. A force F is exerted by a string wrapped around the spool. When F has a certain critical value the center of mass of the spool does not move. When this is the...

Nice, thanks. I have a test next week and I am trying to figure out some of these problems. I will probably post another one here.

Great, Thank You very much ! You are extremely helpful! I know you helped me last time too. I wish I could figure out how to tackle these problems from the get go. How do I know which equations to use?

Ok, so for Torque I have 7.17. In the equation that you gave me I do not have inertia but I do have angular acceleration. How do solve for inertia and tie these two ends together?

It seems I have the radius and force for the equation but I don't have Sin. Is the wheel considered 360 degrees?

Ok, cool, I found radius times force times sin theta which equals torque.

I found an equation that states the total torque equals the moment of inertia of the body. Does this help me somehow?

Homework Statement A force of 21.09 N is applied tangentially to a wheel of radius 0.340 m and gives rise to an angular acceleration of 1.20 rad/s ^2. Calculate the rotational inertia of the wheel. a) 7.46 kg . m2 b) 4.98 kg . m2 c) 8.96 kg . m2 d) 5.97 kg . m2 Homework Equations...

Thank you, that link helped.

Force is 10 N, Theta must be 45 degrees, and the radius must be 0.63 m I think?

Homework Statement A force of 10 N is applied to the end of a 0.63 m long torque wrench at an angle 45 degrees from a line joining the pivot point to the handle. What is the magnitude of the torque generated about the pivot point? Homework Equations rFsin= [b]3. The...

Well, to transfer the only courses that are left for me to do are Physics 102, 103 and Organic Chemistry 241a and b. I am currently enrolled in Physics 102 and 241a. Oh yeah I also need to take one more lab each for each class. I at least got a B on my Physics lab last semester! If I don't...