Question

Mike is smaller than Oliver but the see-saw balances.
Explain why it balances, using the principle of moments.​

Answer 1

Moment=Force*distance from the pivot.
Moment 1=500N*2m=1000Nm
Moment 2=1000N*1m=1000Nm
Moment 1=Moment 2

Answer 2

The see-saw balances because both the clockwise and anti-clockwise moments are the same

To detect the reason why the see-saw balances, we shall determine the clockwise moment and the anti-clockwise moment.

For Clockwise moment:

Force = 1000 N

Distance = 1 m

Clockwise Moment =?

Moment = Force × distance

Clockwise Moment = 1000 × 1

Clockwise Moment = 1000 Nm

For anti-lockwise moment:

Force = 500 N

Distance = 2 m

Anti-clockwise Moment =?

Moment = Force × distance

Anti-clockwise = 500 × 2

Anti-clockwise = 1000 Nm

From the above calculation, we can see that the clockwise and anticlockwise moments are the same. Thus, the see-saw balances

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