In the following three cases predict whether the magnitude of
the force sensor measurement will be greater than, less than, or
equal to the gravitational force on the 1kg mass (~10N). Explain
your reasoning in each case.
Homework Answers
First case - less than
As tension in string is T then 2T = mg
Second case - less than as angle seems to be less than 60°
Angle is theta © from vertical ... 2Tcos © = mg .. T = mg/2cos©
Third case - more than
As force sensor will experience 2T force and 2T = 2mg
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