Recent content by deathcap00

Can anyone offer any help on this?

does anyone have any suggestions on this one? I can't see to figure it out, thanks all.

thank you both very much!

can you negate phi since your distance from the center of the sphere doesn't change at all?

Do I consider the Earth a particle circling the sun first or something?

So my answer is zero then, that would explain why my professor said that he meant to ask for radial acceleration (but said he would accept angular as well though). Just for the sake of knowing, how would I find the radial acceleration of the rock? Thanks so much for your help.

Is my angle 2*pi? do I need to convert the radius of the tire to miles (or the miles/hr to ft/s)? and the derivative of a constant is zero

Homework Statement A rock is wedged into the treads of a 15 in radius tire. The car to which it is attached is driving down the road at 70mph. What’s the angular acceleration of the rock? Homework Equations ar=- \omega02r The Attempt at a Solution Not sure where to begin...

Homework Statement What is the linear velocity of a persion standing at the Earth’s equator with respect to the Sun, when the Sun is just at the Eastern horizon? Homework Equations Not sure, I used to v=d/t to solve for a person's linear velocity at the equator, just not sure how to handle...

Homework Statement A sphere of radius r0 is rotating about an axis through its geometric center with fixed angular velocity Ω0. Measuring latitude and longitude as is done for the Earth, what is the angular velocity of a point at Θ0 degrees North and Φ0 degrees East. What is the linear...

Thanks to all for the help, I will try and work this problem again this evening with the provided help info. Sorry if I am not that smart about this stuff, I am taking Statics for the first time and vector calc too so it's all very new to me and I am having a hard time getting some of the...

How do I incorporate 1500N into the process? Don't one of the other cables need a value in Newtons for me to calculate? By terminate, I meant that the 1500N force isn't anchored on one end so I don't know how to use that value in my calculations. Hopefully, that clears it up...

So if magnitude is asked for, what are the general beginning steps to get your answer?

We haven't been taught about moments or cross products yet either. I think I understand about splitting the x,y,z components up, but the 1500N force doesn't "terminate" anywhere so how do I determine that? Also, wouldn't I need one of the forces of AC or AB to determine the resultant force...

We haven't learned about equilibrium yet, so I am not sure about that.