Question

State the magnitude and direction of the force of gravity acting on the body of mass 9kg.( g=10m/s2)

Answer 1

Answer:

-90 N

Explanation:

Given :

Mass of body (m) = 9kg

Acceleration of Gravity {Negative} (a) = - 10 m/s²

Force (F) = ? N

From Second Law Of Motion (Newton's Law)

(i) F = m × a

F = 9 × (-10)

F = - 90 N

Hence , Magnitude Of Force Would Be -90 Newton.

(ii) From 3rd Law of Motion

The force of gravity acting on the body is negative.