Posted by **jasmine** on Friday, October 4, 2013 at 1:20pm.

A 4.00 bucket of water is accelerated upward by a cord of negligible mass whose breaking strength is 78.0 . If the bucket starts from rest, what is the minimum time required to raise the bucket a vertical distance of 10.0 without breaking the cord?

- physics -
**Elena**, Friday, October 4, 2013 at 2:09pm
ma=T-mg

a=(T/m)-g= 19.5 – 9.8 = 9.7 m/s²

h=at²/2=>

t=2h/a = 2•10/9.7 = 2.06 s.

- physics -
**Juan**, Friday, January 30, 2015 at 6:42am
the above solution is correct except for the very last part. They did not take into account that it should have been:

t^2=(2h/a)

sqrt(t^2)=sqrt(2.06)

t=1.44

## Answer this Question

## Related Questions

- physics - A 5.50 bucket of water is accelerated upward by a cord of negligible ...
- physics - A 5.30kg bucket of water is accelerated upward by a cord of negligible...
- physics - A 4.40kg bucket of water is accelerated upward by a cord of negligible...
- physics - A 4.00kg kg bucket of water is accelerated upward by a cord of ...
- Physics - You raise a bucket of water from the bottom of a well that is 12 m ...
- Physics - You raise a bucket of water from the bottom of a well that is 12 m ...
- physics - You raise a bucket of water from the bottom of a deep well. If your ...
- physics - You raise a bucket of water from the bottom of a deep well. If your ...
- Physics - You raise a bucket of water from the bottom of a deep well. If your ...
- physics! ** - You raise a bucket of water from the bottom of a deep well. If ...