00:01
Problem we have given that a member steps into the elevator and gets on the scale before the elevator door close the scale shows a weight of 183 .7 pound.
00:15
We know that scale reads the value of normal force.
00:21
Suppose this is the person.
00:25
Normal force will be in the downward direction and due to its weight, this is gravitational force in the downward direction.
00:37
Initially there is no acceleration when he enters into the elevator then we can say that normal force should be equal to weight.
00:46
So we can find weight will be equal to 183 .7 pound or we can write it, it is 817 .1 newton.
00:59
This is the weight of this person.
01:04
Now when the door closes the elevator start accelerating with an constern extend acceleration in the upper direction which is 2 .43 meter per second square.
01:24
So according to newton's second law, we will net force should be equal to mass into acceleration.
01:42
So net force in the upward direction is normal force minus w should be equal to mass into acceleration.
01:53
Now in this problem we have to find what is the weight shown by the scale? scale display while the elevator is accelerating...