. A spring balance read 80 N weight of body as 160
N moving with accelerated motion. If mass of a
body is 10 Kg, then the magnitude of acceleration is???
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ANSWER
Given that,
Mass of body m=10kg
Acceleration a=2m/s
2
(I). The lift is ascending with an acceleration
According to figure
T−mg=ma
T=ma+mg
g
T
=m+
g
ma
g
T
=10+
10
10×2
g
T
=12kg
(II). the descending with the same acceleration
mg−T=ma
T=mg−ma
g
T
=m−
g
ma
g
T
=10−
10
10×2
g
T
=10−2
g
T
=8kg
(III). the descending with a constant velocity
T−mg=0
T=mg
g
T
=10kg
This is the answer
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