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Question

An object with a specific mass will weigh ______.

This question was previously asked in
RRB ALP 2018 CBT 2 Fitter Question Paper (21-Jan-2019) (Shift 3)
The correct answer is
more on the Earth than on the Moon

The question asks to compare the weight of an object with a specific mass on Earth versus the Moon.

Weight Depends on Gravity

Weight is defined as the force of gravity acting on an object's mass. The formula for weight (\(W\)) is:

$ \(W = m \times g\) $

where m is the object's mass and g is the acceleration due to gravity.

Mass vs. Weight

  • Mass: An intrinsic property of matter, which remains constant regardless of location.
  • Weight: The force exerted on an object by gravity. It changes depending on the gravitational field strength.

Earth vs. Moon Gravity

  • The acceleration due to gravity on Earth (gEarth) is approximately 9.8 m/s2.
  • The acceleration due to gravity on the Moon (gMoon) is significantly less, about 1.62 m/s2, which is roughly 1/6th of Earth's gravity.

Comparing Weights

Since the object's mass (m) is the same on both Earth and the Moon, its weight will be directly proportional to the gravitational acceleration (g) of the location.

  • Weight on Earth: WEarth = m \times gEarth
  • Weight on the Moon: WMoon = m \times gMoon

Because gEarth > gMoon, it follows that:

$ \(W_{Earth} > W_{Moon}\) $

Therefore, the object will weigh more on the Earth than on the Moon.

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Similar Questions

  1. The value of g on the moon is 1/6 th of the value of g on the earth. If a man can jump 1.5 m high on the earth, on the moon, he can jump up to a height of:

  2. Fill in the blank with the most appropriate option.

    The Universal Constant of Gravitation is ________.

  3. Consider a hypothetical planet whose mass and radius are both half that of Earth. If g is the acceleration due to gravity on the surface of Earth, the acceleration due to gravity on the planet will be:

  4. Let \(W_e\) and \(W_m\) be the weight of an object on the Earth and the Moon, respectively. Then, the ratio \(W_e/W_m\) is equal to ______.
  5. A boy throws two balls in air in such a manner that when the first ball is at its maximum height he throws the second ball. If the balls are thrown with the time difference of one second, the maximum height attained by each ball is \((g = 10 \text{ m/s}^2)\)
  6. Two spheres of masses \(m\) and \(M\) are situated in air and the gravitational force between them is \(F\). The space between the masses is now filled with a liquid of specific gravity 3. The gravitational force will now be:
  7. What will happen during the free fall of a massive object under the influence of gravitational force of the earth ?

  8. Which of the following statements is/are INCORRECT?

    A. The ratio of the force of gravitation between two masses, m1 and m2, kept at a distance R on the earth and on the moon is 1:1.
    B. Nm2/kg2 is the SI unit of G.
    C. The value of G depends on the distance between the bodies.
    D. The value of G depends on the masses of the bodies.
  9. Acceleration due to gravity is highest at ____.

  10. A 100 gram ball is kept on the top of a building of 70 m height. Find the potential energy of the ball (assume g = 10 m/s 2)


Important Questions from Gravity

  1. Which of the following statement is correct?

    I. Gravitation is a weak force unless large masses are involved.

    II. The weight is equal to the product of mass and acceleration due to gravity.

  2. What is the reason that the value of g (acceleration due to gravity) becomes greater at the poles than at the equator?

  3. If the acceleration due to gravity on the surface of earth is g, then the acceleration due to gravity on the surface of a planet whose mass is same as that of earth and radius is twice as that of earth is ___________.

  4. A man's mass is 72 kg on the earth. His mass on the moon will be:

  5. At which of the following place, weight of an object is maximum?

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