Answer:
Weight change from place to place because it is a strong function of gravity. Recall that mass is universally constant. Hence weight varies becuas gravity varies. ... Other reason for variation of weight across the earth's surface are, rotation of the earth, altitude and local topography of the area.
The time it takes for a point to reach 0 displacement from maximum displacement is

of a cycle. Thus, one period (

) will take

.
The frequency is simply

.
The speed is given by:
Explanation:
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Answer:
W = 7.5 J
Explanation:
W = KE
W = ½mv² = ½0.6(5²) = 7.5 J
Niño, piedra y ascensor están todos en el mismo marco de referencia inercial.
los 2 m / s no son importantes.