thanks for your reply. ' It will vary since it is no longer in equilibrium'.. But I don't really get it. i thought the only force acting downwards is the weight of the meter stick. So if the reading on the spring balance varies, is it larger than 1.2N or smaller?
My previous post has been removed due to some reasons.
I would like to ask another question: if a uniform metre ruler with weight of 1.2N, suspended at its mid-point from a spring balance. No other force is added to the ruler.
The reading on the spring balance is 1.2N. Am I right?
If...
Turning effect of force (Moments)
Homework Statement
A uniform metre ruler of weight of 1.2N suspended at its mid-point from a spring scale which is calibrated in Newton(N).
An apple with weight of 0.75N, suspended from the metre rule at the 10cm mark, is balance by a weight of 1N, which is...
Homework Statement
A uniform metre ruler of weight of 1.2N suspended at its mid-point from a spring scale which is calibrated in Newton(N).
An apple with weight of 0.75N, suspended from the metre rule at the 10cm mark, is balance by a weight of 1N, which is suspended from the 80cm mark...