Physics · Foundation

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Balancing a seesawRunning
Equation balance. Heavier child distance at 1.49 m. Small child moment 36 kg·m, Large child moment 66.96 kg·m. Currently small child moment is short by 30.96 kg·m.TUNINGSMALL CHILD MOMENTLARGE CHILD MOMENT1.49 M
t = 0.0s

Small child moment

36kg·m

Large child moment

66.96kg·m

1.49 m

Equation balance. Heavier child distance at 1.49 m. Small child moment 36 kg·m, Large child moment 66.96 kg·m. Currently small child moment is short by 30.96 kg·m.

What has to balancem1d1=m2d2m_1 d_1 = m_2 d_2

What is happening

You arrive at a playground seesaw with two children of very different size.

The 45 kg child keeps slamming down however close in they shuffle. A 30 kg child sits 1.2 m from the middle.