An object of mass 
is tied to a string of length 
and a variable horizontal force is applied on it which starts at zero and gradually increases until the string makes an angel 
with the vertical. Work done by the force 
is
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a)
b)
c)
d)
is tied to a string of length and a variable horizontal force is applied on it which starts at zero and gradually increases until the string makes an angel with the vertical. Work done by the force isa)
b)
c)
d)
Question ID - 50950 | SaraNextGen Top Answer An object of mass is tied to a string of length and a variable horizontal force is applied on it which starts at zero and gradually increases until the string makes an angel with the vertical. Work done by the force is
a)
b)
c)
d)
An object of mass is tied to a string of length and a variable horizontal force is applied on it which starts at zero and gradually increases until the string makes an angel with the vertical. Work done by the force is
|
a) |
|
b) |
|
c) |
|
d) |
|
1 Answer
127 votes
Answer Key / Explanation : (c) -
(c)
or 
(Since, change in kinetic energy is zero)
.png)
Here, 
work done by tension = 0
work done by fore of gravity
127 votes
Answer Link
127