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ID: 2038635 • Letter: M
Question
Masterin le Chrome Secure |https://session.masteringphysics.com/myct/itemView?assignmentProblemID-93182603 offset next Homework 4-2 Problem 8.63 ) 9019 > Part A Two wiras are tied to the 200 g sphere shown in figure. The sphere revolves in a horizontal circle at constant speed of 7.00 m/s . Figure What is he tension in the upper wre? Express your answer with the appropriate units. ValueUnits Submit Part B What Is the tenslon In the lower wire? Express your answer with the appropriate units. Figure 1 of 1 alueUnits 0.5m Submit Request Answer 0.5 mExplanation / Answer
sin theta = 0.5/1 = 0.5
theta = 30° with the horizantal
r = L*cos30 = 1*cos30° = 0.866 m
along horizantal
Tu*cos30 + Tl*cos30 = m*v^2/r
Tu*cos30 + Tl*cos30 = (0.2*72)/0.866 = 11.32
Tu*cos30 + Tl*cos30 = 11.32
Tu + Tl = 13.07 ..................(1)
along vertical
Tu*sin30 = mg + Tl*sin30
Tu = 2mg+Tl = (2*0.2*9.8)+Ti
Tu - Tl = 3.92 ..............(2)
from 1 &2
Tu = 8.50 N <-----------answer
Tl = 4.58 N <-----------answer