Recent content by CentrifugalKing

Okay I've updated. Mind telling me if this is sound? R1 R2. Chng. R c/d P. 2. 3. 1. C Q. 3. 1.5. 1.5. D R. 2.5. 3. 0.5. D

So 1.5?

So R2 for Q would be 1 as opposed to 2?

So should R2 be 3.5? Because that was what I initially thought but my answer choices lack a 3.5 Also, I'm not sure about anything regarding the C/D column

Oh yes I now understand. Yeah, they are spaced evenly. My problem is more along the lines of whether I counted right or not. I just wanted an outside confirmation

I'm not quite sure what you are getting at here. Care to elaborate?

Homework Statement https://session.masteringphysics.com/problemAsset/1383558/3/21.EX26.jpg Make a table with rows labeled P, Q, and R and columns labeled r1, r2, Δr, and C/D. Fill in the table for points P, Q, and R, giving the distances as multiples of λ and indicating, with a C or a D...

Oh I see my mistake! So this is right?

Oh, So I did a bit. Is this correct? I brought the R from a/R to the other side. I wanted to cancel the 1/2 so I multiplied everything by 2. 2gR^2 = (R^2+R2^2+2R^2) a?

@Doc Al Thanks for all your help, and I think I got it. After a bit of Algebra: (2/3)((g*R^2)/(R^2+R2^2))=a And the other a=g Is that all I can do? And then compare it?

Hate to bump this up again, but I've gotten pretty far but got jumbled on one part. So I did net torque = I(alpha) And did some substitution mg*R = (((1/2)(M) (R^2+R2^2) + MR^2))) (a/R) Thing is, would R^2+R2^2 be the same as the other R's? Sorry if I'm not being clear. But how would the...

Oh so it will be mgh= (1/2)(M)(Rf)((v^2)/(Rf^2)) +Mv^2 + PE? So what would PE equal? Would the mass change to just one sheet of paper rather than the whole roll? Or should I also set up Newton's 2nd Law?

Homework Statement Okay, so I'm supposed to take two fresh rolls of toilet paper and drop them. One of which, I am supposed to let unravel while falling. The other, I just drop on its own. I'm supposed to find the height at which both will drop and hit the ground at the same time. Homework...

@J Hann I thought I did with the "2pi/604800" part. So that's velocity? How would I get acceleration?

Homework Statement A pulley, with a rotational inertia of 1.5✕ 10-3kg·m2 about its axle and a radius of 10 cm, is acted on by a force applied tangentially at its rim. The force magnitude varies in time as F = 0.50t + 0.30t2, where F is in Newtons and t in seconds. The pulley is initially at...