Question

an astronat weighs 900n on earth . on the moon he weighs 150n. calculate the moons gravitational strength (take g=10nkg-1)

Answer 1

Answer:

5/3

Explanation:

∴ m = 900 / 10 = 90 kg. Gravity of Moon = 1/6 × Gravity of Earth. Answer :- Gravitational strength on the moon = 5/3 Nkg-1

Answer 2

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Given:

• We have been given that the weight of astronaut on earth is 900N.
• And his weight on moon is 150N.
• It is also given that gravity of Earth(g) =10Nkg-1.

To Find:

• We need to find the Moon's gravitational strength.

Solution:

We know that weight(W) = mg where m is the mass and g is the gravity.

It is given that g = 10Nkg-1.

We know that mass of a body is same in the universe. So,

Let g(m) be the gravity of the moon.

Weight of astronaut(W) = 900N

= m × g(e)

= m × 10

∴ m = 900/10 = 90kg

Now, weight of astronaut on moon is

m × g(m) = 150N.

∴ 150 = m × g(m)

=> 150 = 90 × g(m)

=> 150/90 = g(m)

=> 5/3 = g(m)

Geavity of moon = 1/6 gravity of Earth.

Therefore, moon's gravitational strength is 5/3Nkg-1.