3. Mengidentifikasi soal melalui gambar
=
1
= −
2
=
Mengidentifikasi panjang lintasan
=
= ̇
̇
3
Energi Kinetik
1 1 1
2
= ̇ 1 2 + ̇ 2 2 +
̇
3
2 2 2
1 1 1
̇
= + +
2
2
2 2
̇
̇
2 2 2
1
̇
= +
2
2 2
̇
2
Energi Potensial
= −
= −
2
= − ( − )
Lagrangian
ℒ = −
̇
= ̇ + + ( − )
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