Recent content by StavangerFinest

Oh yeah... 0,785s...Didn't notice that they had nine instead...Sorry, my bad

It is, but where we study they insist on decimal numbers. It is inaccurate, but the main reason why they do it is so we can use our knowledge about significant digits. You'd be surprised over how many people make silly mistakes on significant digits.

Here's a starting point: F- Fh = M* a ("h" being in a subscript of F, and "a" being "a" of centre of mass) I could post whole my work, but I believe It's better for you that you figure it out yourself. But this starting point should be more than...

d shouldn't disappear, no.

Just ignore that one. I started over from this formula: F- Fh= M* a (a centre of mass) and I worked my way down from there.

I did it again and i get 0,79s... Assistants told me I shouldn't have used abc formula but a simple t= Δθ/ Δω... Can you help me with question e) and thereby f) in this exercise though? I got in f) that d= 2L/3 (two thirds of L) pretty insecure abt this one

It absolutely does and than you for that. I'm sure that this is helpful to a lot of people like myself, so never quit just if the initiator of the question doesn't seem to response. Thanks again, and @haruspex I'm still waiting on response on one of my previous questions abt angular velocity...

I got t= 0,40s...What did you use as θf and θi?

I'm a bit stuck with e) though, I get tangential force to be Ft= ((mr^2α)/d)-mrω^2-F (the force from the mother-in-law which is 100N), and it doesn't seem like the correct answer. Guidance or any tip is appreciated

I got 10 in a)...Inertia formula that i have used is: I=(ML^2)/3...The question says that we should consider the door as a uniform rod, hence the formula that i have chosen to use...Please correct me if I'm wrong