If the gravitational field strength at a point is 10 N/kg, what is the gravitati
Practice Questions
Q1
If the gravitational field strength at a point is 10 N/kg, what is the gravitational potential at that point assuming the reference point is at infinity?
-10 J/kg
10 J/kg
0 J/kg
-5 J/kg
Questions & Step-by-Step Solutions
If the gravitational field strength at a point is 10 N/kg, what is the gravitational potential at that point assuming the reference point is at infinity?
Step 1: Understand that gravitational field strength (g) is given as 10 N/kg.
Step 2: Know that gravitational potential (V) is calculated using the formula V = -g * r.
Step 3: Choose a distance (r) from the point where the gravitational field strength is measured. We will use r = 1 meter for this example.
Step 4: Substitute the values into the formula: V = -10 N/kg * 1 m.
Step 5: Calculate the result: V = -10 J/kg.
Gravitational Field Strength – The gravitational field strength (g) is the force experienced by a unit mass at a point in a gravitational field, measured in N/kg.
Gravitational Potential – Gravitational potential (V) is the work done per unit mass to move an object from a reference point (usually infinity) to a point in the field, measured in J/kg.
Relationship between g and V – The relationship between gravitational field strength and gravitational potential is given by V = -g * r, where r is the distance from the mass creating the field.
