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View History Bookmarks People Window Help O 4/ B6%-)- Oct 23 10:14 AM Test previously taken: chag x t Review Test Submissionc ch x (31) 9 Big Mistakes Every CChegg Study I Guided SoC Physics Archive jda_1 30776598-1&course-ide-1059830-1Scontertjde-107184793-1;&outcommid.-123..; IOO Selected Answer. 4.50 Conect Answer: 0458 * 5% Question 6 0 ous of 2 points A bail is attached to a horizontal cord of length Iwhose other end is fixed. A peg is located a distance h dieectly below the point of atachment of the cord. t b tension in the coed for a 0.26-kg ball when it reaches the top of its circular path? 0.71,what is the Peg t-1. O 2014 Pearson Education, Inc

Explanation / Answer

distance fallen = L - 2*(L-h) = 2*h - L

therefore:
v_top = sqrt(2*g*(2*h - L))

Using your given value of h:
v_top = sqrt(2*g*(2*0.71 - 1)*L)

= sqrt(0.84*g*L)

So,
T = v^2*m / L

=> T = (0.84*g*L)*0.25 / L

=> T = 0.84*9.8*0.25 = 2.058 N

or 2.1 N rounded off

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