Jawaban:

besar percepatan dan gaya kontak adalah 2 m/s2 dan 160 N.space

Penjelasan:

Diketahui:

begin mathsize 14px style m subscript A equals 40 space kg m subscript B equals 20 space kg F equals 480 space straight N alpha equals 37 degree g equals 10 space straight m divided by straight s squared Percepatan space gerak Dengan space Hukum space II thin space Newton Anggap space benda space straight A space dan space straight B space adalah space satu space kesatuan capital sigma F equals m a F minus left parenthesis m subscript A plus m subscript B right parenthesis g sin left parenthesis alpha right parenthesis equals left parenthesis m subscript A plus m subscript B right parenthesis a a equals fraction numerator F minus left parenthesis m subscript A plus m subscript B right parenthesis g sin left parenthesis alpha right parenthesis over denominator left parenthesis m subscript A plus m subscript B right parenthesis end fraction a equals fraction numerator 480 space straight N minus left parenthesis 40 plus 20 right parenthesis cross times 10 cross times sin left parenthesis 37 degree right parenthesis over denominator left parenthesis 40 plus 20 right parenthesis end fraction bold italic a bold equals bold 2 bold space bold m bold divided by bold s to the power of bold 2 Mencari space nilai space gaya space kontak Tinjau space balok space straight B capital sigma F subscript x equals m a F subscript A B end subscript minus m subscript B g sin left parenthesis alpha right parenthesis equals m subscript B a F subscript A B end subscript equals m subscript B a plus m subscript B g sin left parenthesis alpha right parenthesis F subscript A B end subscript equals 20 cross times 2 plus 20 cross times 10 cross times sin left parenthesis 37 degree right parenthesis bold italic F subscript bold AB bold equals bold 160 bold space bold N end style

Jadi, besar percepatan dan gaya kontak adalah 2 m/s2 dan 160 N.space