# Perpetual Pendulum & PhysicsActor

**URL:** <https://forums.unrealengine.com/t/perpetual-pendulum-physicsactor/338234>\
**Category:** World Creation\
**Tags:** cablecomponent, friction, physics-constraint, unreal-engine, Physics, Blueprint, question\
**Created:** [November 12, 2015, 8:59am UTC](https://forums.unrealengine.com/t/perpetual-pendulum-physicsactor/338234 "2015-11-12T08:59:32Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Helghast](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Helghast](https://forums.unrealengine.com/u/Helghast)\
**Post date:** [November 12, 2015, 8:59am UTC](https://forums.unrealengine.com/t/perpetual-pendulum-physicsactor/338234/1 "2015-11-12T08:59:32Z")

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I have created a pendulum, but the problem is that the pendulum is losing strength over time until completely stops.

[http://www.learnnext.com/media/images/q2aanswers/991930/Simple%20pendulum\_1428912643012.png](http://www.learnnext.com/media/images/q2aanswers/991930/Simple%20pendulum_1428912643012.png)

Is there any way to prevent the pendulum stop?  
Could be perpetual motion by using a Physical Actor?

The components used are those of the video (ZIP):

[link text][2]

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**Author:** ![jonbellini](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@jonbellini](https://forums.unrealengine.com/u/jonbellini)\
**Post date:** [February 10, 2016, 5:19pm UTC](https://forums.unrealengine.com/t/perpetual-pendulum-physicsactor/338234/2 "2016-02-10T17:19:49Z")

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I’d like to know how you connected that… I can’t get what you have to work…

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**Author:** ![anonymous\_user\_dd1b1c8d](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_dd1b1c8d](https://forums.unrealengine.com/u/anonymous_user_dd1b1c8d)\
**Post date:** [June 22, 2018, 12:51pm UTC](https://forums.unrealengine.com/t/perpetual-pendulum-physicsactor/338234/3 "2018-06-22T12:51:45Z")

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Did you solve this? I am trying to simulate the perpetual motion of a mass attached to a damp-free spring.

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**Author:** ![ThompsonN13](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@ThompsonN13](https://forums.unrealengine.com/u/ThompsonN13)\
**Post date:** [June 22, 2018, 1:25pm UTC](https://forums.unrealengine.com/t/perpetual-pendulum-physicsactor/338234/4 "2018-06-22T13:25:39Z")

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the engine is designed to be somewhat realistic physics, so you will need to overcome the dampening forces and gravity. to accomplish this the only thing i could think of would be to constantly add force or to not use physics simulation.