Last Updated On [03-11-2023]
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
.png)
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a) |
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b) |
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c) |
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d) |
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Question ID - 50950 :- 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) |
|
(c)
or 
(Since, change in kinetic energy is zero)
.png)
Here, 
work done by tension = 0
work done by fore of gravity
Next Question :
A light inextensible string that goes over a smooth fixed pulley as shown in the figure connects two blocks of masses 
and 
. Taking 
, find the work done (in joules) by the string on the block of mass 
during the first second after the system is released from rest
.png)
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a) |
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b) |
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c) |
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d) |
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