The discussion revolves around a pendulum problem involving its speed at specific horizontal positions and the implications of its length. The pendulum has a length of 0.950 m and is analyzed when it reaches angles of θ = 90° and θ = 270°, where its speed is noted to be 4.80 m/s.
The conversation is ongoing, with participants exploring the implications of significant figures and the correctness of the tangential acceleration calculation. Guidance has been offered regarding the importance of significant figures, but no consensus or resolution has been reached regarding the calculations involved.
The problem does not specify significant figures, leading to discussions about acceptable ranges for answers. There is also a noted uncertainty about the calculation of tangential acceleration, indicating potential gaps in understanding or information.
Welcome to Physics Forums.whatsntomake said:Homework Statement
An image of the problem may be found here:
http://i417.photobucket.com/albums/pp258/whatsntomake/Physics/Eight.png
A pendulum of length 0.950 m swings in a vertical plane (see figure). When the pendulum is in the two horizontal positions θ = 90° and θ = 270°, its speed is 4.80 m/s.
Homework Equations
A=v^2/r
The Attempt at a Solution
Okay that's fair enough.whatsntomake said:Hi, thanks for your quick response.
The problem does not specify any significant figure so it fine to any number of significant digits as long as the answer is close by a certain margin of error.
How did you calculate it?whatsntomake said:also I am not sure if the tangential acceleration I had is correct