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user6495236358775
Posisi kaki sedikit terbuka membuat gaya berat ke bawah akan terdistribusi melebar mengikuti arah kaki. Jika gaya berat sebagai besaran vektor diurai menggunakan perkalian cosinus ataupun sinus, akan membuat kontraksi otot disepanjang kaki lebih kecil dibandingkan ketika kaki lurus kenjuntai ke bawah. Hal ini akan memberikan kesan berjalan di kemiringan ke atas terasa lebih ringan (memang jadi lebih ringan sih) Hal ini juga harus dengan syarat, Bahwa alas kaki haruslah memiliki gaya gesek yang ...
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