Question

A diver stands at the top of a platform that is $15$ meters high.After diving, she challenges herself from a cliff that is $30$ meters high.Since she is twice as far from the surface of the earth when she is on the cliff as compared with the diving board, how does her weight on the cliff compare with her weight on the diving board?

• A. Her weight on the cliff is half as much
• B. Her weight on the cliff is one-fourth as much
• C. Her weight on the cliff is about the same
• D. Her weight on the cliff is twice as much
• E. Her weight on the cliff is four times as much

Answer 1

The correct option is C Her weight on the cliff is about the same

Weight of an object ,of mass ,m is given by ,

$W=mg$ ,

We can see that weight (gravitational pull by earth ) doesn't depend upon height of object from earth , therefore weight will be same on cliff . Though value of g decreases with height hence weight but for the given heights (as they are negligible , compared to radius of earth ) , g is almost constant .