Recent content by allykat

Well, I'm not given the weight, only the densities, but I tried to calculate a relation by canceling out the volumes and g. The acceleration should change because the pressure changes with depth.

So I did Wapp/ Wactual= Vsphere(ρsphere-ρfluid)g/ (Vsphereρsphereg)= V(2.7-1.03)g/2.7Vg= 0.6185, but I do not know what to do with this result.

Homework Statement A solid sphere of aluminum (density 2.7 g/cm^3) is gently dropped into a deep ocean. (The density of ocean water is approximately 1.03 g/cm^3.) Calculate the sphere's acceleration at the point where it is completely submerged into the ocean. As the sphere drops deeper...

Have you tried using Fb=Fg?

I graphed it and got the answer for omega is 7.7 rad/s. I was wondering if there is a way to do this algebraically as we won't be allowed graphing calculators on our exams. Btw thank you for helping me with this, it makes more sense now.

First off, these are practice problems not to be handed in. We're given the answers to check up on ourselves. It says in the aswers that the frequency is 7.7 rad/s and the amplitude is 15cm. I keep diving v(t) by x(t) to get -ωtan(ωt)=85.7/10=8.57s but I don't know how to proceed after this...

Hello, it seems you have misunderstood, I have been doing this problem for 3 days now looking at various resources, but the professor being really busy this week, I wondered that the physics forum may lend me some aid. Unfortunately, it has been assumed that I don't really care about a problem...

It's for first year university homework and it's a custom text they made this year. It's full of a lot of errors as the professors pointed out. Also one of our professors wrote it.

There was no diagram and this is a new book that our school uses. I am quite frustrated by the lack of info as well.

Unfortunately that's how underspecified the problem is in the textbook which makes it hard for me to answer the question.

Homework Statement A mass attached to a horizontal spring is pulled to the right at t=0. The mass passes x=+10 cm at t=0.3s with a velocity 85.7cm/s. What is a) frequency b)amplitude c) phase constant Homework Equations Acos(ωt+phi)= x(t) -ωAsin(ωt+phi)=v(t) The Attempt at a...