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Segunda Lei de Newton – Exercícios (Halliday)
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1. 𝐹𝑥!!!!⃗ = 1,88 𝑁;𝐹𝑦!!!!!⃗ = 0,684 𝑁; �⃗� = (1,88𝚤 + 0,684𝚥)𝑁 2. �⃗� = (0𝚤 + 0𝚥)𝑚/𝑠!; �⃗� = (0𝚤+ 4𝚥)𝑚/𝑠!; �⃗� =
(3𝚤 + 0𝚥)𝑚/𝑠! 3. 𝑎 = 2,93 𝑚/𝑠! 4. 𝐹3!!!!!⃗ = (−34𝚤 − 12𝚥)𝑁 5. 𝐹2!!!!!⃗ = (−32𝚤 − 20,8𝚥)𝑁; |𝐹2|!!!!!!!!⃗ = 38,2 𝑁;Θ = 213° 6. 𝐹2!!!!!⃗ = (−2𝚤 + 6𝚥)𝑁 7. �⃗� = (0,86𝚤− 0,17𝚥)𝑚/𝑠!; |�⃗�| = 0,88 𝑚/𝑠!; Θ =
−11,12° 8. |𝐹𝑏|!!!!!!!!⃗ = 241 𝑁 9. 𝑐 = 9 10. �⃗� = −7,98𝚤 𝑁 11. |𝐹|!!!!!⃗ = 8,37 𝑁;Θ = 227°;Θ = 235° 12. Θ = 56,3°
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