Experiment testing the principle of moments
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When forces act in a different direction, yet still balance, the total turning effect in each direction will be the same: sum of clockwise = sum of anticlockwise moments moments. What did you notice about the anticlockwise moment and the clockwise moment?.

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Experiment testing the principle of moments l.jpg

When forces act in a different direction, yet still balance, the total turning effect in each direction will be the same: sum of clockwise = sum of anticlockwise

moments moments

What did you notice about the anticlockwise moment and the clockwise moment?

Experiment -Testing the principle of moments


Mini white board activity with large moments apparatus l.jpg

Problem 1 - Find force F the total turning effect in each direction will be the same:

Mini white board activity with large moments apparatus

0.90m

0.30m

F

60N


Slide3 l.jpg

F

10cm

20cm

45N


Slide4 l.jpg

d

0.60m

20N

30N

44N

0.20m


Slide5 l.jpg

d the total turning effect in each direction will be the same:

10N

20cm

40cm

20N

70N

  • Problem 4 - Find distance d


Slide6 l.jpg

F the total turning effect in each direction will be the same:

d1=80cm

d2=120cm

One more!

The beam has a weight of 30N, find force F.


Slide7 l.jpg

F the total turning effect in each direction will be the same:

d1=80cm

d2=120cm

One more!

30 N

d3=60cm