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Solved: CALC A balky cow is leaving the barn as you try
Chapter 6, Problem 60P(choose chapter or problem)
Problem 60P
CALC A balky cow is leaving the barn as you try harder and harder to push her back in. In coordinates with the origin at the barn door, the cow walks from x = 0 to x = 6.9 m as you apply a force with x-component Fx = -[20.0 N + (3.0 N/m)x]. How much work does the force you apply do on the cow during this displacement?
Questions & Answers
QUESTION:
Problem 60P
CALC A balky cow is leaving the barn as you try harder and harder to push her back in. In coordinates with the origin at the barn door, the cow walks from x = 0 to x = 6.9 m as you apply a force with x-component Fx = -[20.0 N + (3.0 N/m)x]. How much work does the force you apply do on the cow during this displacement?
ANSWER:
Solution 60P
Work done by a variable force is given by, …..(1) , where F is the force that is a function of
,
and
are initial and final displacements.
Given that, Fx = -[20.0 N + (3.0 N/m)x]