| ⇦ | 
| ⇨ |
The mass of a lift is 2000kg. When the tension in the supporting cable is 28000N, then its acceleration is
Options
(a) 4ms⁻² upwards
(b) 4 ms⁻² downwards
(c) 14 ms⁻² upwards
(d) 30 ms⁻² downwards
Correct Answer:
4ms⁻² upwards
Explanation:
Net force, F = T – mg
ma = T – mg
2000a = 28000 – 20000 = 8000
a = 8000 / 2000 = 4 ms⁻² upwards
Related Questions: - Energy of all molecules of a monoatomic gas having a volume V and pressure P is 3PV/2.
- In Moseley’s law √ν=a(z-b), the values of the screening constant for K-series
- A radioactive substance contains 10000 nuclei and its halflife period is 20 days
- When radiation is incident on a photoelectron emitter,
- Calculate the focal length of a reading glass of a person, if the distance
Question Type: Memory
(964)
Difficulty Level: Easy
(1008)
Topics: Laws of Motion
(103)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Energy of all molecules of a monoatomic gas having a volume V and pressure P is 3PV/2.
- In Moseley’s law √ν=a(z-b), the values of the screening constant for K-series
- A radioactive substance contains 10000 nuclei and its halflife period is 20 days
- When radiation is incident on a photoelectron emitter,
- Calculate the focal length of a reading glass of a person, if the distance
Question Type: Memory (964)
Difficulty Level: Easy (1008)
Topics: Laws of Motion (103)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
18000+ students are using NEETLab to improve their score. What about you?
Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.
Share this page with your friends
Leave a Reply