# Science

A spring balance attched to the ceiling of an elevator supports a 10N object. In each of the following casses, tell whether there is a net force or none on the object. If there is in what direction does it act? Tell whether the reading in the spring balance in the following cases is less, equal or greater than the true weight of the object which is 10N

a. Elevator at rest

b. Moving with constant speed upward

c. Moving with constant speed downward

d. Moving upward with steadily increasing speed

e. moving downward with acceleration due to gravity

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1. If you have ever been in an elevator you should be able to answer this. What forces are in play in each case? Imagine you standing on a weight scale in the elevator. What will the weight show in each case?

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posted by Lee
2. for a, b, and c, the only forces are the normal force and W which are equal soo there's no unbalanced force am i right

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posted by cho

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