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Grade: 11
        
The simple pendulum is released horizontal. The mass of the bob attached m and lenth of the pendulum R. Find the tension of the pedulum makes an angle 30 degree with the vertical?
one year ago

Answers : (1)

Himanshu Rathour
119 Points
							
The height of pendulum when it makes 30 with vertical is
Cos30=base/R
Base=Rcos30
Work done by gravity=change in kinetic energy
1/2mv²=mgRcos30
v²=2gRcos30
Now, 
Let tension =T
T-mgcos30=mv²/r
T=mgcos30+2mgcos30
T=3mgcos30
one year ago
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