v = 2x + 1.
For a particle moving on X-axis. m 2kg, work done on
particle by all forces between x = 0 to x = 5
A. 100 J
B. 200 J
C. 150 J
D. 120 J
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Answer:
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w=∫Fdx
=∫
0
5
7−2x+3x
2
dx
=[7x−
2
2x
2
+
3
3x
2
]
0
5
=[7x−x
2
+x
3
]
0
5
=[7×5−5
2
+5
3
]−[0−0+0]
=[35−25+125]−0
=135J
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