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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
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
slide4
Problem 3 - Find distance d

d

0.60m

20N

30N

44N

0.20m

slide5

d

10N

20cm

40cm

20N

70N

  • Problem 4 - Find distance d
slide6

F

d1=80cm

d2=120cm

One more!

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

slide7

F

d1=80cm

d2=120cm

One more!

30 N

d3=60cm

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