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Physics
A stone of mass 0.05 kg is thrown vertically upwards. What is the direction and magnitude of net force on the stone during its upward motion ?
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Q. A stone of mass $0.05 \,kg$ is thrown vertically upwards. What is the direction and magnitude of net force on the stone during its upward motion ?
J & K CET
J & K CET 2014
Laws of Motion
A
0.49 N vertically upwards
25%
B
0.49 N vertically downwards
50%
C
0.98 N vertically downwards
11%
D
9.8 N vertically downwards
14%
Solution:
Given, $m = 0.05\, kg $
We know that, net force acting on a stone,
$f_{g}=mg$
$= 0.05 \times (-9.8)=-0.40\,N$
$ = 0.49 \,N$ vertically downwards