Bissoy.com
Doctors Medicines MCQs Q&A

The mass of a lift is 2000 kg. When the tension in the supporting cable is 28000 N, its acceleration is:

The mass of a lift is 2000 kg. When the tension in the supporting cable is 28000 N, its acceleration is: Correct Answer 4 ms<sup>−2</sup> upwards

The correct answer is option 1) i.e. 4 ms−2 upwards.

CONCEPT:

  • The weight associated with a moving lift (W), tension force on the supporting cable (T), and acceleration (a) of the lift can be categorized into 2 cases:

Important Points

  • The positive value of acceleration confirms that our assumption was correct i.e. lift is moving up with an acceleration 'a'
  • If the acceleration obtained was negative, it indicates that the assumption is wrong i.e. lift is moving downwards with the acceleration 'a'.

Related Questions

If the tension in a cable supporting a lift moving upwards is twice the tension when the lift is moving downwards, the acceleration of the lift, is
The tension in the cable supporting a lift moving upwards is twice the tension when the lift moves downwards. What is the acceleration of the lift?
If tension in the cable supporting a lift moving downwards is half the tension when it is moving upwards, the acceleration of the lift is
Which one is incorrect? 1. Kumabaram Lift Canal-Older name - Nohar Sohwa Lift Canal. 2. Kawar sen Lift Canal-Older name - Lunaksar Lift Canal. 3. Panna Lal Lift Canal - Older name - Gajner Lift canal. 4. Veer Tejaji Lift Canal-Older name - Bagdsar.
Tension in the cable supporting a lift is more when the lift is moving __________ with an acceleration.
From an alloy, two specimens are machined and tested separately under tension and compression. The engineering stress-strain curves as well as the true stress-true strain curves for tension and compression are plotted in the same diagram. Identify the correct statements:
P. The engineering stress-strain curves in tension and compression are identical.
Q. The true stress-true strain curve in compression is lower than the true stresstrue strain curve in tension due to Bauschinger effect.
R. The true stress-true strain curve in tension is above the corresponding engineering stress-strain, curve.
S. The true stress-true strain curve in tension and compression are identical.
S1: Instantly the full load yanked Gordy towards the side of the bridge.
P: But the pull of the cable was too much.
Q: He could hardly feel the cable, slipping through his fingers, ripping off his gloves, and streaking over the railing like an escaping snake.
R: It smashed his hands hard against the top of the railing, causing a split - second feeling of fierce pain followed by numbness.
S: He held on to the cable; it had been hard work lifting it, and he did not want to have to start over again.
S6: Feeling a sharp burning sensation where the cable was speeding between his things, Gordy rose on tiptoe and as he did, the slithering coil of cable tightened around his left foot and yanked him over the railing.

The Proper sequence should be:
What is the monoisotopic and average mass of valine? Given data: Mass of the most abundant isotope of Carbon (C°)=12.0000, Mass of most abundant isotope of Hydrogen (H°)=1.0078, Mass of most abundant isotope of Oxygen (O°)=15.9949, Mass of most abundant isotope of Nitrogen (N°)=14.0031, The average mass of Carbon (C)=12.011, The average mass of Hydrogen (H)=1.008, The average mass of Oxygen (O)=15.999, The average mass of Nitrogen (N)=14.007.
According to the International Commission on Education for the Twenty-first Century headed by Jacques Delors, which of the following main tensions will be witnessed during the 21st century ? A. The tension between the global and the local B. The tension between tradition and modernity C. The tension between the spiritual and the material D. The tension between the poor and the rich E. The tension between the developed and the developing societies Choose the correct answer from the options given below:
Refer the below data table and answer the following Question.   2011 2012 2013 2014 2015 Company A 2000 2000 5000 2000 1000 Company B 2000 3000 1000 5000 2000 Company C 3000 2000 5000 3000 3000   For which of the following pairs of years the total exports from the three Companies together are equal? (Note: Figures given are in lakh rupees)