With the increase in mass you also increase the normal force the track exerts on the car and thus increase the force of friction between the track and the car which is why the heavier car takes longer
I did something like this last year. I used a plastic cup and put weights in it so the bottom always hit first. I then glue half of a paper towel roll to the bottom of the cup so that the cup surrounds most of the roll. The egg fit snug in the roll so it didn't move and didn't break. The weights...
Thank you very much for your help. I found out what I did on 5a I just solved for Centripetal force and forgot all about the weight of the car. I'll redo the others I got wrong and post back later. Thank you again.
I was just wondering if anyone has a few minutes if they could check my answers for my homework. I have 7 questions on Rotaional Motion
1)A potter's wheel moves from rest to an angular speed of .20rev/s in 30s. Assuming constant angular acceleration, what is its angular acceleration in...
Since you have mass and velocity you can easily solve for the KEi using the equation for it 1/2mV^2 Also since the box goes to the ground it loses all of its potential energy due to gravity(It does not actually lose all of the energy its just converted into KE) so if you solve for its initial...
as for a) Your answer is wrong. Unfortuanatly I'm not sure as to the correct answer. It might just be because its late and I'm just not working fully so I'll try again in the morning.
and for b) If all 4 vertices lie on the circle then no one side of the rectangle can be greater than 2a...