6.15 Part A On a farm, you are pushing on a stubbom pig with a horizontal force

Question

6.15 Part A On a farm, you are pushing on a stubbom pig with a horizontal force with magnitude 22.7 N and direction 37.0° How much work does this force do during a displacement of the pig that is s = (5.00 m) Express your answer with the appropriate units. W 90.6 J SubmitMY Answers Give Up Correct Significant Figures Feedback: Your answer 90.7 J was either rounded differently or used a different number of signif required for this part Part B How much work does this force do during a displacement of the pig that is 8--(6.00 m) Express your answer with the appropriate units. W109 J Incorrect, Try Again; 6 attempts remaining

Explanation / Answer

Given,

F = 22.7 N ; theta = 37 deg

A)s = 5 i

We know that

W = F d cos(theta)

W = 22.7 x 5 x cos37 = 90.645 J

Hence, W = 90.65 J

b)s = -6 j

W = F d cos(theta)

W = 22.7 x -6 x sin37 = - 82.96 J

Hence, W = -82.96 J

c)s = -2 i + 4 j

W = F d cos(theta)

W = 22.7 (-2 cos37 + 4 sin37) = 18.39 J

Hence, W = 18.39 N

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