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Category > Physics Posted 08 May 2017 My Price 4.00

Question:Suppose youâre eating

Question:Suppose youâre eating in a restaurant where the dishes are shared at the table and all placed uniformly on a rotating disk-like surface. Model this surface as a thin disk of radius 38.6 cm. You canât stop thinking about physics even though youâre out with your friends, and decide to calculate the mass of the rotating surface and all the food. If the surface is initially at rest and you exert a tangential force of 2.2 N on it, you observe that the food rotates at a speed of 1.3 rev/s after applying the force consistenty for 2.2 seconds. Find the mass of the disk wtih the food, in kg.

 

Whats wrong with the following logic?

 

m = F / a = F / (R * angularA) = F / (R * (omega / t))

Answers

SuperTutor
(15)
Status NEW Posted 08 May 2017 06:05 AM My Price 4.00

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