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Physics
Physics
Problem
A body of mass
m
m
m
is kept on a spring balance inside an elevator that is accelerating uniformly upward with acceleration
a
a
a
. Which one of the following expressions gives the reading
R
R
R
shown by the balance? a)
m
(
g
−
a
)
m(g-a)
m
(
g
−
a
)
b)
m
a
ma
ma
c)
m
(
g
+
a
)
m(g+a)
m
(
g
+
a
)
d)
m
g
mg
m
g
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