Princess Lora sets her crystal ball on a velvet pillow in the middle of a round

Question

Princess Lora sets her crystal ball on a velvet pillow in the middle of a round table that sits in a corner of her apartment. One day, as she was watching TV, a small earthquake struck. Princess Lora shicked that she has not predicted it, looked up to see her precious crystal ball rolling across the table toward the corner. The table has a diameter of 4 feet and the crystal ball has a diameter of 10 inches. Should she fling herself across the room to stop the ball from reaching the edge of the table and falling? Predict the near future for her crystal ball.

Explanation / Answer

Solution:

Let us assume that ball move the distance after earthquake = x inches

Now diameter of crystal is = 10 inches

and diameter of round table = 4 feet = 48 inches

therefore difference of distance of ball movement on the table before reaching to edge must be greatar than its diameter

to protect it from fall

therefore

48 - x > 10

Answer :

Related Questions

Navigate

• Browse (All)
• Browse P
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.