Recent content by BiggestAfrica

I figured it out, thanks! Mass was never used in the calculation, but I was using the wrong height for my calculations, using the height of the triangle itself rather than subtracting the height of the triangle from the radius (4.12 - 2.1933 = 1.2067).

Things generally speed up, and the calculation represents the height of the ball. I also realized that there should be initial potential energy (since height is 8.24 at the initial velocity of 17.5), so I calculated the final velocity while taking initial potential energy into account, and got...

I first found the height of the ball after it's passed the 45 degree angle by doing 4.12*sin(45) = 2.9133, and plugged in the rest of the variables (masses cancel) .5(m)(vo^2) = (.5)(m)(vf^2) + mgh (17.5^2)(.5) = (.5)(vf^2)(9.8*2.9133) vf = 15.7845, however this is incorrect I don't understand...

I'm completely unsure about friction... I initially thought that they would be the same due to the distance increasing while the angle decreased, until I recalled that Ѳ is the angle between force applied and displacement vector. Now I think it's possibly due to the cosine aspect of the equation...

Apologies for my fairly undescriptive title, I'm having trouble coming up with a better one. I'm simply trying to verify whether my understanding of this problem is correct. 1. Pushing the oven up a ramp 4m long would require more force (my reasoning here is based on the results of a lab which...

Thank you that was exactly it!

Sorry for the delayed response, but I took your suggestions in mind and here's what I tried to no success. Found the mass of the planet with the equation a = Gm/r^2 6.23 = G(m)/(4430000^2) m = 1.8323e24 Used the mass to find acceleration of gravity at h = 15372.1km a =...

Oops! I had tried using both radii and the different between them for the final calculation, but not the velocity. It is my last try on this HW, so just to be sure, I use the height for the calculations, or the difference between the height and radius of the planet?

To find velocity, I rewrote a = v^2/r v = sqrt(6.23*4430000) = 5253.4655m/s a= 6.23m/s^2

Hi! This is a problem from my physics 1 high school course. I've tried using the first and third equations to determine period (answer of 8326.9544s.), however that was incorrect and I never even touched G. I'm not sure where to go from here at all. Any help is appreciated!