NX motion is a powerful tool for the simulation of dynamics and kinematics and I had used it for creating a basic simulation model of the simple pendulum. The aim is to check the mass does not depend on the time period. I had performed this study in two manners, one with as I've modeled and second with the reduction in weight. So here is the parts list along with the properties that I am using in the study.
1. Pendulum arm
Sketch:
Material: Cast iron
Mass in the first attempt: 2.45 kg
Mass in the second attempt: 1.68 kg
2. Pendulum pin/ axel
Diameter: 15 mm
Other values
Gravitational acceleration: 9.81 N/m^2
Dynamic frictional co-efficient: 0.1
Stiction transitional velocity: 0.0572957795130824 degree/Second
Let's discuss the outcomes...
Setup-1
In setup-1 I am using the pendulum part as above model
you can see the outcome animation video here...
Setup-2
In setup-2 I am using the pendulum part as with some modification. Change here is to put a 30 mm hole on the bottom end of the pendulum with the same center of circular geometry. Now, this hole will help to reduce some mass from the previous body.
you can see the outcome animation video here...
Conclusion:
In both cases, the pendulum is taking the same time to get stable. This means there's no role of mass in the account of the time period of the suspended body.
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