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Question

The gravitational intensity a region is 10(^i^j)N/kg. The work done by the gravitational force to shift slowly a particle of mass 1 Kg from point (1m,1m) to a point (2m,2m) is
  1. 10 J
  2. 40 J
  3. 10 J
  4. +40 J

A
10 J
B
10 J
C
+40 J
D
40 J
Solution
Verified by Toppr

Fg=mEg=1(10(^i^j))=10(^i^j)N=10^i10^jN
S=(2^i2^j)(^i^j)=^i3^jm
Work done, Fg.S(10^i10^j).(^i3^j)=10(1)+(10)(3)=+40J

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