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Acceleration of Pail Problem

  • Thread starter celect
  • Start date
  • #1
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Problem:
What is the acceleration of a 20kg pail of cement that is pulled upward (not sideways)
with a force of 300N.
let g= 10m/s^2

Answer:
20kg*10m/s^2 = 200N
a = (300N-200N)/20kg
a = 5m/s^2

The book gives me the answer as 2m/s^2...

did I miss something? I beleive this to be a type o in the book.
 

Answers and Replies

  • #2
HallsofIvy
Science Advisor
Homework Helper
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Your answer is correct. You could also have calculated that

The acceleration, neglecting gravity would be ma= 20kg a= 300N so a= 15 m/s2 and, since g= -10 m/s2 the acceleration, after taking gravity into account is 15-10= 5 m/s2.
 
  • #3
17
0
Yea prolly a typo
 

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