- #1
loba333
- 36
- 0
This is irritating me so much, if you guys could help that would be great.
there is a mass hung from a celling. two wires connect to one wire which connects to the mass.
i have resolved the forces as follows :
Fx=0= -T1cos37 + T2cos53
Fy=0=T1sin37 + T2sin53 – T3
T3 = 125N as this is the force due to gravity on the mass.
The way i tried to work it out is by using Fx where T1=T2cos53/cos37
and then plugging this into Fy to get 125 = T2cos53sin37/cos37 + T2sin53
I then factor out T2 and divide 125 by the result of all the cosines and sines
how ever i get T1=65N and T2=71N when the actual answers are T1=75.1N, T2=99.9N
what am i doing wrong this is simple algebra surely!
there is a mass hung from a celling. two wires connect to one wire which connects to the mass.
i have resolved the forces as follows :
Fx=0= -T1cos37 + T2cos53
Fy=0=T1sin37 + T2sin53 – T3
T3 = 125N as this is the force due to gravity on the mass.
The way i tried to work it out is by using Fx where T1=T2cos53/cos37
and then plugging this into Fy to get 125 = T2cos53sin37/cos37 + T2sin53
I then factor out T2 and divide 125 by the result of all the cosines and sines
how ever i get T1=65N and T2=71N when the actual answers are T1=75.1N, T2=99.9N
what am i doing wrong this is simple algebra surely!