Recent content by lilmissbossy

yes thank you i haven't really studied any math since yr 12 in 2002 or ohysics at all for that matter... so i am finding both equally confusing. that layout shows clearly what my problem was. i understand how to set that question out now let's just hope i can remember that for my exam! Thank you

thank you so much i get really confused with all this physics, biology is my degree so i find this all very stressful

Excellent i finally got one right by myself!

i got the cosine from tinytim, but i realize now that its not a factor. ok i see where i rearranged wrong and i now have answers that show a difference in the tension at 90* and at 53*. with the 53* having more tension on the strings. i guess when you think about it, it makes sense that the...

Homework Statement force F is required to push a crate of mass m up a plank of length L into a truck whose platform is a vertical distance h above the road. a)How much work is done pusing the crate up the plank m=100kg, L=5m, F=490N h=1.2m b)what is the increase in PE of the crate once the...

i also get for the tension on the vertical ropes (no angles) at T1=1/2mg T1=1/2(55kg)(9.8ms-1) T1=269.5 which is basically what i get when i divide the previous answers by 2 should they be the same?

i know this again i have done two different types of equations both giving the same answer except one is a -ve number. here are the equations Tsin(θ)+Tsin(θ)-mg=ma=0 rearranged T= sin(θ)+sin(θ)-mg T=sin(53)+sin(53)-(55kg)(9.8ms-1) T= -537.402 then i used the cos equation to check...

Oh ok i see now i have made a mistake when rearranging the equation... thats great i will factor in the values and it should make more sense:smile:

Homework Statement ice hockey puck moving at speed V1 collides head on with a second identical puck moving towards it at speed V2. After the collision, the first puck slows down to speed v1 without changing direction. a)After the collision what is the speed v2 of the second puck? b)...

Ok i understand it now, thank a heap guys. i wish i new about this place a lot earlier... Cheers

Ok so i guess instead of using 1/2 i factor in the angle it hangs on. maybe something like T1= sin(theta)mg... again i am not very good at physics at all

ok that picture didnt work at all sorry

I have drawn a picture which kinda looks like this _________________ \o o/ \ / \ / \___/ [_m_] didnt know how to inuput a paint drawning. o represents theta if the ropes were hanging vertically i have the equation T1=...

mass m suspended by a pair of vertical ropes attached to the ceiling what are the rope tensions if they comprise a V shape each at an angle theta with the ceiling? i have played with this problem for a while and i can't seem to find what the relevant equations are really only first time...