Question

10. Write an expression for the force due to gravity on
a body of mass m and explain the meaning of the
symbols used in it.
11. Define the term acceleration due to gravity ? Write
its S.I. unit.
12. Write down the average value of g on the earth's
surface.
13. How is the acceleration due to gravity on the surface
of the earth related to its mass and radius?
14. How are g and G related ?
15. A body falls freely under gravity from rest and
reaches the ground in time 1. Write an expression
for the height fallen by the body.
A body is thrown vertically upwards with an
initial velocity u. Write an expression for the
maximum height attained by the body.
Ans. h = u²128
7. Define the terms mass and weight.
5. Distinguish between mass and weight.
81​

Answer 1

Answer:

F=mg

change in velocity per unit time is acceleration.and when it is acted by earth its acceleration due to gravity(g)= 9.8m/square

S.I. unit is metre per second square

mass is directly and radius inversely

Explanation: