A force acting on a particle moving in the xy-plane is given by F=2yi^+x2j^N, where x and y are in m. The particle moves along a straight line from the origin to (5, 5). The work done by F is:
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a
125 J
b
66.7 J
c
35 J
d
25 J
answer is B.
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Detailed Solution
y=mx+c . Here m=1 and c = 0 . Work done W = ∫ F→.dr→and dr→=dx i^ +dyj ^w=∫05 2×dx+∫05 y2dyy=x.
A force acting on a particle moving in the xy-plane is given by F=2yi^+x2j^N, where x and y are in m. The particle moves along a straight line from the origin to (5, 5). The work done by F is: