Rachel Has Been Reading Her Physics Book $\times$ 10³ N

question 104

Multiple Choice

Rachel has been reading her physics book.She takes her weighing scales into an elevator and stands on them.If her normal weight is 690 N (155 lbs) ,and the elevator moves upward at 0.25g and then down at 0.25g,what is the difference between the up and down scale readings?

• A)690 N
• B)520 N
• C)170 N
• D)345 N
• E)1.04 \(\times\) 10³ N