Acceleration due to gravity

1. Acceleration Due
to Gravity

2. Objects are accelerated towards
the earth due to the force of
attraction of earth. This
acceleration is known as
acceleration due gravity(g).

3. R

4. By Newton’s second law of motion
By universal law of gravitation
So,

5. The factors
influencing
the value of
g are...
1. Mass of earth (M)
2. Radius of earth (R)
Acceleration due to gravity does
not depend on the mass of the
body. It will be same for all
bodies falling to earth.

6. G = 6.7×10-11 Nm2kg-2
M = 6×1024 kg
R = 6.4×106 m

7. At polar regions
g= 9.83m/s2
At equator
g=9.78m/s2
g=9.8 m/s2

8. A stone dropped from a height of 19.66m
took 2s to reach the ground. What is the
value of g here? Where on the surface of
the earth would this activity have taken
place?

9. Let’s fill the gaps
Write the vale of g at the labelled regions in the figure
Centre
Surface

10. Thank you...