A) tension of the rope
B) friction of the rope
C) magnetic force of Earth
D) gravitational force of Earth
Correct Answer: D
Solution :
To climb the top, Jack has to move away from Earths centre. Earth attracts every object near its surface toward its centre. This force of attraction is known as the gravitational force of Earth. Therefore, Jack has to overcome the gravitational force of Earth to climb the top. The correct answer is D.You need to login to perform this action.
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