lynnblufordmann
lynnblufordmann lynnblufordmann
  • 21-03-2020
  • Physics
contestada

A pulley block and tackle is used to lift a piano. The piano weighs 2000N. If the worker used 100 N of force to lift the piano, what is the mechanical advantage of the block and tackle?


.2


.1


10


20

Respuesta :

kyrahaught7
kyrahaught7 kyrahaught7
  • 21-03-2020
10 because it’s right
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