A ball tied on a string rotates in a circular path as shown above. The only forces acting on the ball at any point are the weigh
t and of the string. What is the equation for the net centripetal force at point C?
1 answer:
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Answer:
B. +m
Explanation:
The magnification of an image is defined as the ratio between the size of the image and of the object:
where we have
y' = size of the image
y = size of the object
There are two possible situations:
- When m is positive, y' has same sign as y: this means that the image image is upright
- When m is negative, y' has opposite sign to y: this means that the image is upside down
Therefore, the correct option representing an upright image is
B. +m