- #1
crhscoog
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Homework Statement
Two small blocks each of mass m, are connected by a string of constant length 4h and negligible mass. Block A is placed on a smooth tabletop and block B hangs over the edge of the table. The tabletop is a distance 2h above the floor. Block B is a distance h above the floor. Block B is then released from rest at a distance h above the floor at time t=0.
The Attempt at a Solution
h= 2h
g= 9.8m/s^2
x= ?
Fnet = ma
mg = 2ma
a= g/2
x= 1/2at^2
h= 1/2(g/2)t^2
t^2 = 4h/g
t= 2sqr(h/g)
v= at
v= (g/2)(2sqr(h/g)
x= vt
= (g/2)(2sqr(h/g)(2sqr(h/g)
= 4hg/2g
= 2h
Is that right? I was wondering if the 2h distance that Block A has to travel before going off the table had a factor although it should be going at constant velocity...