At what height would the gravitational potential energy have a value of 73.7 joules for a 15 kilogram object? note that acceleration due to gravity is 9.8 meters/second2.

0.5 m

Explanation:

Energy possessed by a body due its height above the surface of earth is known as gravitational potential energy.

Gravitation potential energy is given by:

G.P.E. = m g h

where m is the mass, g is the acceleration due to gravity and h is the height.

Given:

G.P.E. = 73.7 J

m = 15 kg

g = 9.8 m/s²

⇒ 73.7 J = 15 kg × 9.8 m/s² × h

⇒ h = (73.7 J) / ( 15 kg × 9.8 m/s²) = 0.5 m

the working equation for the angular size is the product of the physical size and 360 degrees divided by the product of two pi and distance from earth. the minimum size would be 0.559 degrees while the maximum size would be 0.49 degrees.