The gravitational field in a region is given by 
. Work done by this field is zero when a particle is moved along the line
a)
b)
c)
d)
The gravitational field in a region is given by . Work done by this field is zero when a particle is moved along the line
a)
b)
c)
d)
Question ID - 54837 | SaraNextGen Top Answer
The gravitational field in a region is given by . Work done by this field is zero when a particle is moved along the line
a)
b)
c)
d)
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The gravitational field in a region is given by |
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a) |
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b) |
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c) |
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d) |
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1 Answer
127 votes
Answer Key / Explanation : (c) -
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(c) Work done by the gravitational field is zero, when displacement is perpendicular to gravitational field. Here, gravitational field,
If
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if 
is the angle which makes with positive 
-axis, then
or 
is the angle which the line 
makes with positive 
-axis, then 
so 
the line 
is perpendicular to 
127 votes
Answer Link
127