The upward normal force exerted by the floor is 620 n on an elevator passenger who weighs 650 n. is the passenger accelerating? if so, what are the magnitude and direction of the acceleration?

downward

Explanation:

There are two forces acting on the passenger on the elevator:

- The upward normal force, R

- The weight of the passenger, W

Therefore we can write Newton's second law as

where a is the acceleration of the passenger and m its mass. Here we took upward as positive direction, so that R is positive.

The mass of the passenger can also be written as

where g = 9.8 m/s^2 is the acceleration of gravity.

So the equation becomes

And solving for a, we find the acceleration:

and the negative sign means the direction is downward.

concave lenses are used here. they spread the light out before it reaches the convex lens in the eye, therefore letting the image focus directly on the retina. hyperopia is known to you probably as farsightedness.

massxgravity x heght=weightxheight= pe

4900=490xh

h=10