At a certain location, a gravitational force with a magnitude of 350 newtons acts on a 70.kilogram astronaut. What is the magnitude of the gravitational field
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Question
At a certain location, a gravitational force with
a magnitude of 350 newtons acts on a 70.kilogram
astronaut. What is the magnitude of the gravitational
field strength at this location?
(1) 0.20 kg/N (3) 9.8 m/s2
(2) 5.0 N/kg (4) 25 000 N•kg
a magnitude of 350 newtons acts on a 70.kilogram
astronaut. What is the magnitude of the gravitational
field strength at this location?
(1) 0.20 kg/N (3) 9.8 m/s2
(2) 5.0 N/kg (4) 25 000 N•kg
2 Answer

1. User Answers TaylorBayley
The unit of gravitational field strength is Nkg^1 ie N/kg because the formula for Gravitational field strength is g=F/m where F is the gravitational force and m is the mass, and so by process of elimination, the magnitude of the gravitational field strength at this location is:
5.0 N/kg 
2. User Answers IsrarAwan
The correct answer is: Option (2) 5.0 N/kg
Explanation:
To find the magnitude of the gravitational field strength, you need the formula of weight, which is:
weight = mass * gravitationalfieldstrength
Where weight is in Newtons, mass is in kilograms and gravitationalfieldstrength is (Newtons per kilogram).
In this particular scenario, the gravitational force is equal to the weight; please do not confuse weight with a mass. Mass is 70 kg.
Plug in the values:
350 = 70 * gravitationalfieldstrength
gravitationalfieldstrength = 350/70
gravitationalfieldstrength = 5.0 N/kg (Option 2)