Question

5. If two masses of 1 kg each are separated by 1m distance then force of attraction between the
two is

1. 5x10^11
2. 5x101-11
3. 6.67*10^11
4. 6.67x10^-11​

Answer 1

Given:-

• Mass of each body is 1kg

• Distance between them is 1m

To Find:-

• Force of attraction (F)

Solution:-

By using this Formula

→ F = GMm'/d²

here

F is the force of attraction

G is the universal constant

M is the mass of 1st body

m' is the mass of 2nd body

d is the distance between them

As we know that the Value of universal Gravitation constant is 6.67 × 10^-11

Substitute the value we get

→ F = 6.67×10^-11 × 1×1/1²

→ F = 6.67×10^-11 /1

→ F = 6.67×10^-11N

Hence, Option (4) is the correct answer.

Answer 2

Option (4) 6.67 × 10^{-11}

Explanation :-

✔ Given :-

• Mass of both body is 1kg. ( .°. M = 1kg & m = 1kg).

• Distance (d) = 1m.

✔ To Find :-

• The force (F) of attraction.

✔ Solution :-

As we know that,

F = GMm/d²

[ Putting values ]

=> F = 6.67 × 10^{-11} × 1 × 1 / 1²

=> F = 6.67 × 10^{-11} / 1

✔ F = 6.67 × 10^{-11}N.