Mechanical Engineering - Engineering Mechanics - Discussion
Discussion Forum : Engineering Mechanics - Section 2 (Q.No. 29)
29.
A lift moves downwards with an acceleration of 9.8 m/s2. The pressure exerted by a man on the floor of the lift is zero.
Discussion:
8 comments Page 1 of 1.
Saurabh said:
6 years ago
If the lift comes with the acceleration of 9.8m/s^2. It means lift is under free fall condition and in such condition, weight inside life is considered as 0.
(1)
Scientist sakthivel said:
8 years ago
wn lift move downwards.
Reaction of lift R=m(g-a),
Here g=a=9.81,
So, R=0.
Hence, inside weight neglect.
Reaction of lift R=m(g-a),
Here g=a=9.81,
So, R=0.
Hence, inside weight neglect.
Omprakash said:
8 years ago
Gravity force =9.81N, if Acceleration is =9.81m/s^2, then, weight insides lift become zero.
(2)
Suresh said:
9 years ago
The acceleration of gravity of Earth is (9.8 m/Sec square), Since the Lift is moving downwards with the Acceleration of 9.8 M/Sec Square, so the answer is ZERO.
Uday said:
1 decade ago
This is newtons theory if a lift falls with acceleration equal to gravity than the object inside the lift becomes weightless.
Pravat kumar sahoo said:
1 decade ago
Can you elaborate how it occurs?
Yogesh Gawade said:
1 decade ago
How this possible?
Yogeshwaran.g said:
1 decade ago
Why this occurs?
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