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The gravitational potential at a point is defined as the work done in bringing a

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Question: The gravitational potential at a point is defined as the work done in bringing a unit mass from infinity to that point. What is the unit of gravitational potential?

Options:

  1. J/kg
  2. N/kg
  3. J/m
  4. N/m

Correct Answer: J/kg

Solution: 

The unit of gravitational potential is Joules per kilogram (J/kg).

The gravitational potential at a point is defined as the work done in bringing a

Practice Questions

Q1
The gravitational potential at a point is defined as the work done in bringing a unit mass from infinity to that point. What is the unit of gravitational potential?
  1. J/kg
  2. N/kg
  3. J/m
  4. N/m

Questions & Step-by-Step Solutions

The gravitational potential at a point is defined as the work done in bringing a unit mass from infinity to that point. What is the unit of gravitational potential?
  • Step 1: Understand that gravitational potential is related to work done.
  • Step 2: Recall that work is measured in Joules (J).
  • Step 3: Recognize that gravitational potential is defined per unit mass.
  • Step 4: Know that mass is measured in kilograms (kg).
  • Step 5: Combine the units: since gravitational potential is work done (J) per unit mass (kg), the unit becomes Joules per kilogram (J/kg).
  • Gravitational Potential – Gravitational potential is the work done per unit mass in bringing a mass from infinity to a specific point in a gravitational field.
  • Units of Measurement – Understanding the relationship between work (measured in Joules) and mass (measured in kilograms) to derive the unit of gravitational potential.
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