The problem involves calculating the tension in a string that is spinning a 340 gram mass in a horizontal circle at a rate of 2.5 revolutions per second, with the string length being 72 cm. Participants are exploring the relationship between tension and centripetal acceleration in this context.
The discussion is active, with various interpretations being explored regarding the clarity of the problem statement. Some participants suggest that the question may be tricky due to the horizontal assumption, while others argue it presents a learning opportunity. Guidance has been offered to draw free body diagrams to aid in understanding the forces involved.
There is an ongoing debate about the clarity of the problem, particularly concerning the assumption that the string is horizontal. Participants note that this assumption may lead to confusion in calculations and interpretations.
Not sure if that is what it is or not sure how to calculate it? Why not do the calculation anyway and see if the answer inspires you with any confidence.Madelin Pierce said:Homework Statement
Spin 340 gram mass at the end of a 72 cm string in a horizontal circle around head 2.5 rev/s. Calculate tension
Homework Equations
The Attempt at a Solution
I know tension might be equal to mass times centripetal acceleration, but I’m not sure
How so?Dadface said:This must be a trick question.
Hint: Is the string horizontal?Madelin Pierce said:I know tension might be equal to mass times centripetal acceleration, but I’m not sure
Dadface said:This must be a trick question.
The question is unclear and implies that the string is horizontal, which is impossible.gneill said:How so?
I suppose you could do a calculation assuming the string was horizontal and IF the Tension calculates to many times the weight force, the assumption was reasonable - given the answer will be to 2 significant figures only. Otherwise the question is quite tricky, and the free-body diagram is a good, next, starting pointDadface said:The question is unclear and implies that the string is horizontal.
No, it only says that the mass moves in a horizontal circle. Students should be savvy enough to know (or discover) that the string will not be horizontal. It's a learning opportunity, not a trick.Dadface said:The question is unclear and implies that the string is horizontal.
Madelin Pierce said:The Attempt at a Solution
I know tension might be equal to mass times centripetal acceleration, but I’m not sure