An object is lifted from the surface of a spherical planet to an altitude equal to the radius of the planet. as a result

 The correct answer is :  It happens that the mass remains the same but the weight decreases.

Explanation:  While the mass remains constant everywhere, the change in weight is due to the change occurred with gravity:

g '= g (1-2h / r)

As there is upward movement, the weight decreases because gravity decreases. Weight is inversely proportional to the square of the distance between the object and the center of the planet.

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the displacement produced by the body.  

the amount of force subjected to the body.  

the angle between the direction of force and displacement