i have 3 unknowns(a, T1,T2) and 2 equations. how can i get the thir equation b/w a and T2
9 Answers
fibonacci
·2009-12-02 23:51:35
virang1 Jhaveri
·2009-12-02 23:56:48
Simplest method
Find the mass of the pulley(m) then
mg=(1+m)a
a = mg/1+m
fibonacci
·2009-12-03 00:36:56
virang how can we find the mass.
the ans given is 10 m\s but your ans will be <9.8 as m/(m+1) < 1
fibonacci
·2009-12-03 00:49:43
can we assume the pulley as a disc? it isnt written anywhere
still the answer given is 10m/s
eragon24 _Retired
·2009-12-03 00:53:18
find the rel betwee accle of pulley and the block
if accel of block is a accel of pulley will be a/2
T1= 1.(a)........................................
(T2-T1)R=Iα........................
a/2=Rα......................................
I=m2 R2/2
m2 be mass of pulley
so
m2g- T1-T2=m2 (a/2)
eragon24 _Retired
·2009-12-03 01:12:16
array jus check it once more it will match......dese r the only eq to be formed