pada balok A
F - F kontak = m balok a × a
100 - F kontak = 10a
10a + F kontak = 100.... pers 1
pada balok B
F - F kontak = m balok b × a
100 + F kontak = 15a
15a - F kontak = 100... pers 2
10a + F kontak = 100
15a - F kontak = 100
25a = 100
a = 4 m/s²
10×4 + F kontak = 100
40 + F kontak = 100
F kontak = 60 N
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pada balok A
F - F kontak = m balok a × a
100 - F kontak = 10a
10a + F kontak = 100.... pers 1
pada balok B
F - F kontak = m balok b × a
100 + F kontak = 15a
15a - F kontak = 100... pers 2
10a + F kontak = 100
15a - F kontak = 100
25a = 100
a = 4 m/s²
10×4 + F kontak = 100
40 + F kontak = 100
F kontak = 60 N