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JEE Main Physics Class 11 Work, Energy and Power Part 1 Questions
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© examsnet.com
Question : 8
Total: 100
Consider a force
→
F
=
−
x
^
i
+
y
^
j
. The work done by this force in moving a particle from point
A
(
1
,
0
)
to
B
(
0
,
1
)
along the line segment is: (all quantities are in SI units)
[9 Jan. 2020 I]
2
J
1
2
J
1
J
3
2
J
Validate
Solution:
Work done,
W
=
∫
→
F
.
→
d
s
=
(
−
x
^
i
+
y
^
j
)
.
(
d
×
^
i
+
d
^
y
)
⇒
W
=
−
0
∫
1
x
d
x
+
1
∫
0
y
d
y
=
(
0
+
1
2
)
+
1
2
=
1
J
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