Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and beginning April 20th, 2021 (Eastern Time) the Yahoo Answers website will be in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.
Trending News
An object of mass m is being pulled upward by a string, at constant acceleration a.?
An object of mass m is being pulled upward by
a string, at constant acceleration a. Another
string of negligible mass runs from the upper
mass to an equal lower mass, which is being
pulled upward simultaneously.
What can you say about the tension in the
string connecting the two masses, given no
other information?
1. The tension is greater than m g.
2. The tension is less than 2m g.
3. The tension is zero, since it is the upper
string that is accelerating the system.
4. None of these
5. The tension is less than m g.
6. The tension has the same magnitude as
the force applied to the upper.
1 Answer
- Anonymous9 years agoFavorite Answer
The tension in the lower string will be mg + ma
So statement 1 is true
Statement 2 might be true but does not have to be true.
The rest are rubbish