ACCELERATION DUE TO GRAVITY & TERMINAL VELOCITY
Controls:-
Release
Reset
00
:
00
:
00
Mass of object
m
(g)
5
20
5
Coefficient of drag
C
d
0.5
2.0
0.5
Frontal area of
an object
A
(mm
2
)
50
150
50
Size of object
s
(mm)
5
15
5
Lock :
Tube 1 : Vaccum
Tube 2: Select the fluid
Glycerine (⍴ = 1260 kg/m
3
)
Water (⍴ = 997.77 kg/m
3
)
Tube 1 : Vaccum
Tube 2 : Fluid
Obervation Table 1- Object in Vaccum
×
Mass of the object
m
=
50
g
Size of the object
s
=
5
cm
Projected area
A
=
5
m
2
S.No of light gate
Distance of light gate from release position y (m)
Recorded stop-watch timer on passing of the object t (sec)
Recorded time taken by the object to pass through the light gate t’ (sec)
Velocity of the object (m/s)
1
0.4
0
0
0
2
0.6
0
0
0
3
0.8
0
0
0
4
1.0
0
0
0
5
1.2
0
0
0
6
1.4
0
0
0
7
1.6
0
0
0
8
1.8
0
0
0
Slope of graph =
Hence, Acceleration due to gravity =
Obervation Table 2- Object in Fluid
×
Mass of the object
m
=
50
g
Size of the object
s
=
5
cm
Projected area
A
=
5
m
2
Coefficient of drag
C
d
=
0.5
Density of the fluid
ρ
=
997.77
kg/m³
S.No of light gate
Distance of light gate from release position y (m)
Recorded stop-watch timer on passing of the object t (sec)
Recorded time taken by the object to pass through the light gate t’ (sec)
Velocity of the object (m/s)
Drag Force F (N)
1
0.4
0
0
0
0
2
0.6
0
0
0
0
3
0.8
0
0
0
0
4
1.0
0
0
0
0
5
1.2
0
0
0
0
6
1.4
0
0
0
0
7
1.6
0
0
0
0
8
1.8
0
0
0
0
Terminal velocity =
0 m/s
Final drag force =
0 N
Hence, Acceleration due to gravity =
0 m/s2