Question

8. 1) A boy of 30kg stand on
the earth, the force éxerted
by the boy on the earth is? aproximetly answer​

Answer 1

Answer:

30 *9.8 = 294

Step-by-step explanation:

for approx take it 300

though there are in finite numbers between 294 &300

so better not take approx

Answer 2

Given : a boy of 30kg stand on the earth,

To Find : the force exerted by earth on the boy is​

Solution :

Force  =  Mass * acceleration

=> F = ma

Mass m  =  30 kg

acceleration a = g   ( acceleration due to gravity )

F = mg

F = 30 g

g = 10 m/s²

=> F = 30 * 10

=> F = 300 N

force exerted by earth on the boy is 300 N

if g = 9.8 m/s²

Then F = 30 * 9.8  = 294 N

if g = 9.81 m/s²

Then F = 30 * 9.81  = 294.3 N

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