Question

Find the force exerted by A on B, B on A and surface on B.​

Answer 1

Answer:

Explanation:

I only have the explanation for the first Qs. All right so,

30-N= 4A (USING F=MA FORMULA)

30-N=40

-N=20-40

-N=-20

N=20

II) THE EXERTED FORCE WILL BE EQUAL( TRY FIGURING OUT WHY!)

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Answer 2

The answer is 40N, 40N and 160N

GIVEN

Weight of Block A = 4Kg

Weight of Block B = 16 Kg

20N force in upward direction

TO FIND

The force exerted by A on B, B on A and surface on B.

SOLUTION

The above problem can be simply solved as follows;

Force on A by B = Fᴬᴮ

Fᴬᴮ = Mₐg

= 4 × 10

= 40 N

Force on B by A

Usinv Newton's law

Reaction and Action force are equal.

Therefore,

Fᴬᴮ = Fᴮᴬ = 40N

Force on the surface of B

Fᴮ = Mᵇ × g

= 160N

Hence, The answer is 40N, 40N and 160N

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