𝐼 =𝑃𝑜𝑡𝑇𝑜𝑡𝑎𝑙

𝐴

𝑃𝑜𝑡𝑇𝑜𝑡𝑎𝑙 = 𝐼. 𝐴 = 1000 𝑥 9,0 = 9,0 𝑥 10³ 𝑊

𝜂 =𝑃𝑜𝑡Ú𝑡𝑖𝑙

𝑃𝑜𝑡𝑇𝑜𝑡𝑎𝑙

𝑃𝑜𝑡Ú𝑡𝑖𝑙 = 𝜂. 𝑃𝑜𝑡𝑇𝑜𝑡𝑎𝑙 = 0,30 𝑥 9,0 𝑥 10³ = 2,7 𝑥 10³ 𝑊

𝜏𝑇𝑜𝑡𝑎𝑙 = 𝛥𝐸𝑐𝑖𝑛 =𝑚

2(𝑉2 − 𝑉0

2)

𝜏𝑇𝑜𝑡𝑎𝑙 =200

2𝑥 (30)2 = 9,0 𝑥 104 𝐽

𝑃𝑜𝑡Ú𝑡𝑖𝑙 =𝜏𝑇𝑜𝑡𝑎𝑙

𝛥𝑡

𝛥𝑡 =𝜏𝑇𝑜𝑡𝑎𝑙

𝑃𝑜𝑡Ú𝑡𝑖𝑙

= 9,0 𝑥104

2,7𝑥 103 = 33𝑠

ω

ω

ω ω

𝑣1 = 𝑣2

𝜔2 = 𝜔3

𝑣1 = 𝑣2 = 𝜔2𝑅2 → 𝜔2 =𝑣1

𝑅 2

𝑣3 = 𝜔2𝑅3

𝑣3 = 𝑣1𝑅3/𝑅2

𝑣1 = 𝑣3

𝜔2 = 𝜔3

𝑣1 = 𝑣3 = 𝜔3𝑅3 → 𝜔3 =𝑣1

𝑅 3

𝑣2 = 𝜔3𝑅2

𝑣2 = 𝑣1𝑅2/𝑅3

𝑅2 < 𝑅3

𝑇 = 2 𝜋 √(𝐿/𝑔)