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Home Q & A Board Science-Related Homework Help High School Level Science
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afret afret
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A year ago
How does the pulley make work easier?

a
It changes the mass of the piano, making it easy to raise
 b
It changes the direction of the force applied to raise the piano
 c
It changes the duration of time to raise the piano
 d
It changes the amount of energy needed to raise the piano
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ginastarginastar
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#1
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A year ago
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afret Author
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A year ago
Smart ... Thanks!
mmmm_dat_userna
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Yesterday
Just got PERFECT on my quiz
einstein
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2 hours ago
Thanks for your help!!
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