statistical analysis.pptx
- 4. Atwood’s machine 1st equation
Same g is applied only difference is m
𝐹1 = 𝑚1𝑔
𝐹2 = 𝑚2𝑔
𝑛𝑒𝑡 𝐹𝑜𝑟𝑐𝑒 𝐹𝑛 = 𝐹1 − 𝐹2 = 𝑚1 − 𝑚2 𝑔
F1 F2
- 7. Atwood’s machine
For example,
𝑚1=300g 𝑚2=200g
𝐹𝑛 = 𝐹1 − 𝐹2 = 𝑚1 − 𝑚2 𝑔 = 0.1 𝑘𝑔 ⨯ 𝑔
𝐹𝑛 = 𝑚1 + 𝑚2 𝑎 = 0.5 𝑘𝑔 ⨯ 𝑎
𝑔 = 5 ⨯ 𝑎
Measeared 𝑎 = 2 𝑚
𝑠2
Then, 𝑔 = 10 𝑚
𝑠2 compare with theory 9.81