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UPSEE Solved Model Paper 3
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© examsnet.com
Question : 30
Total: 150
Direction : For the following questions choose the correct answers from the codes [a], [b], [c] and [d] defines as follows
Statement I : If there is no slipping between pulley and string, in an at wood machine the tangential acceleration of a point on the rim of the pulley does not depend upon the radius of the pulley.
Statement II : The linear acceleration of the masses in an at wood machine depends upon the mass of pulley but not on the radius of the pulley.
Statement I is true, Statement II is also true and Statement II is the correct explanation or Statement I.
Statement I is true, Statement II is also true but Statement II is not the correct explanation of Statement I.
Statement I is true, Statement II is false.
Statement I is false, Statement II is true.
Validate
Solution:
Acceleration at this situation is given by a =
(
m
1
−
m
2
)
g
(
m
1
+
m
2
+
m
p
1
)
⇒
m
p
= mass of pulley
Here, we see that only mass of the pulley
m
p
is involved in the above equation and not the radius of the pulley is involved in the equation.
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