the maximum value of F such that both blocks move together is
a) umg
b) u(m1+m2)g
c) u(m1/m2)(m1+m2)g
d) u(m2/m1)(m1+m2)g
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the maximum value of F such that both blocks move together is
a) umg
b) u(m1+m2)g
c) u(m1/m2)(m1+m2)g
d) u(m2/m1)(m1+m2)g
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Answer:
Let both blocks move together with acceleration a.
making FBD of m-2 block for vertical balance
M=M
2
g
⇒fr=μM
2
g
⇒a=
M
2
fr
=μg ........(1)
making FBD of second block
F−fr=M
1
a
F−μm
2
g=M
1
(μg)
⇒F=μ[M
1
+M
2
]g.
Explanation:
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