Question

A 60 kg woman stands in an elevator that is accelerating downward at 3.1 m/s^2 Calculate the amount of force she exerts on the elevator floor.

Answer 1

@CliffSedge

Answer 2

You can subtract 3.1m/s^2 from g and compute the weight.

Answer 3

i am getting 186

Answer 4

N = m (g-a)

Answer 5

where a is elevator accelertions and g is gravitation acceleration.,

Answer 6

You need the total acceleration including g=9.81.
Normally the weight would be mg, but the elevator floor is accelerating away, so it's acceleration is taking away from the weight force.

Answer 7

in these conditions our body feels light

Answer 8

N = 60 ( 9.8 - 3.1)

Answer 9

i got it (60)(9.8)-(60)(3.1)

Answer 10

402N

Answer 11

Right. Or factor out the 60 for apparent weight = 60(9.8-3.1).
There are only two significant figures, so it's better to round that off to an even 400 N.