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Question

A particle moves along the x- axis from x=0 to x=5 m under the influence of a force given by F=72x+3x2.Work done in the process is
  1. 70
  2. 270
  3. 35
  4. 135

A
35
B
270
C
135
D
70
Solution
Verified by Toppr

w=Fdx
=5072x+3x2dx
=[7x2x22+3x23]50
=[7xx2+x3]50
=[7×552+53][00+0]
=[3525+125]0
=135J
In this question, answer is 135 J not 70J

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