Roboguru

Sistem roda jari-jari dan dihubungkan seperti gambar. Roda B diputar 60 putaran permenit, maka laju linier roda C adalah ....

Sistem roda jari-jari undefineddan straight R subscript straight c equals 10 space cm dihubungkan seperti gambar. Roda B diputar 60 putaran permenit, maka laju linier roda C adalah ....

  1. 8 straight pi space cm. straight s to the power of negative 1 end exponent

  2. 12 space cm. straight s to the power of negative 1 end exponent

  3. 12 straight pi space cm. straight s to the power of negative 1 end exponent

  4. 24 space cm. straight s to the power of negative 1 end exponent

  5. 24 straight pi space cm. straight s to the power of negative 1 end exponent

Jawaban:

R subscript A equals 2 space c m semicolon space R subscript B equals 4 space c m semicolon space R subscript c equals 10 space c m  omega subscript B equals 60 fraction numerator p u t a r a n over denominator m e n i t end fraction equals 2 straight pi rad over straight s  straight V subscript straight C ?

Roda A dan roda C setali, maka

table attributes columnalign right center left columnspacing 0px end attributes row cell straight V subscript straight A end cell equals cell straight V subscript straight C equals straight V subscript straight B end cell row cell straight omega subscript straight B. straight R subscript straight B end cell equals cell straight omega subscript straight C. straight R subscript straight C end cell row cell straight omega subscript straight C end cell equals cell fraction numerator straight omega subscript straight B. straight R subscript straight B over denominator straight R subscript straight C end fraction equals fraction numerator left parenthesis 2 straight pi right parenthesis left parenthesis 4 right parenthesis over denominator left parenthesis 10 right parenthesis end fraction equals fraction numerator 4 straight pi over denominator 5 end fraction rad divided by straight s end cell row cell straight omega subscript straight C end cell equals cell straight V subscript straight C over straight R subscript straight C end cell row cell fraction numerator 4 straight pi over denominator 5 end fraction end cell equals cell straight V subscript straight C over 10 end cell row cell straight V subscript straight C end cell equals cell 8 straight pi space cm divided by straight s end cell end table

Maka kecepatan linear C adalah 8 straight pi space cm divided by straight s

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