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Punjab Board > 9th > Physics (Total Videos: 48)
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Chapter 5: Turning Effect of Forces (4 videos)

5.1: Principle of moments
1. Verify principle of moments with meter rod on wedge
 
5.2: Tension
1. Find tension in strings by balancing meter rod on stands
 
5.3: To find unknown weight
1. Find weight of unknown object by vector addition of forces
2. Find weight of unknown object by principle of moments
 

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