At what condition the apparent weight become 5 time of the real weight
Answers
Answer:
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Answer:
Do not hesitate to report if not satisfied .
Explanation:
when moving upward in lift our weight increases and if you specifically want your answer "5 times" of real weight you can report I will answer again . when your question had terms like apparent weight and real weight I quickly thought about elevator here is your answer. : Going up & speeding up (acceleration a is positive (up))
In this case, the elevator and the person are starting from rest at a lower
floor. The elevator accelerates upward. The inertia of the person would
prefer to stay stationary, so the elevator floor and scale must push up on
the person to accelerate him upward along with the elevator. (The person
doesn't sink into the floor when the elevator accelerates up. The elevator
and the scale and the person all move together.)
The scale therefore has to push upward with extra force on the person to
accelerate the person's mass upward. This results in a greater contact
force between the scale and the person. Therefore the Normal Force is
larger, so the reading on the scale is a number that is GREATER than the
true weight.
Let's consider Newton's 2nd
Law (ΣF=ma) acting on the person. The overall acceleration of the
person is upward (with the elevator). So ma is positive (upward). The only external forces acting on the person are the force of gravity acting down (-W=-mg) and the supporting Normal
Force FN that the scale applies upward on the person. So ΣF=ma= -mg+FN . We want to know
FN because that is the number that we read off the scale. FN =mg+ma, which is GREATER than
the true weight.
"ACCELERATION"plays a role to decrease (downward) and increase( upward) anyone's weight
Thankyou :-)