- #1
songoku
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- Homework Statement
- Two objects of mass 3 kg and 4 kg are rotating in vertical circle. Mass 3 kg is connected to the center of rotation by string 1 and mass 3 kg and 4 kg are connected by string 2. The length of each string is 0.5 m and the two objects are always collinear when rotating. If the tangential speed of 3 kg object is 4 m/s, find the magnitude of tension in string 2 when they are at the top of the trajectory
- Relevant Equations
- ##v=\omega .r##
##F=m.a##
##a=\frac{v^2}{r}##
Tangential speed of 4 kg object is 8 m/s
At the top of the trajectory, there will be two downwards forces acting on 4 kg object, which are tension of string 2 (T2) and weight
##F=m.a##
##W + T_2=m.\frac{v^2}{r}##
Putting all the values, I get negative value for T2. Where is my mistake?
Thanks
At the top of the trajectory, there will be two downwards forces acting on 4 kg object, which are tension of string 2 (T2) and weight
##F=m.a##
##W + T_2=m.\frac{v^2}{r}##
Putting all the values, I get negative value for T2. Where is my mistake?
Thanks