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The ratio of the weight of a man in a stationary lift and when it is moving downwards with uniform acceleration a is 3:2,then the value of a is
Options
(a) 3/2 g
(b) g/3
(c) g
(d) 2/3g
Correct Answer:
g/3
Explanation:
Weight when stationary = mg
Weight when moving downwards = m(g-a)
3/2 = mg/m(g-a)
3g – 3a = 2g
⇒ a = g/3
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Topics: Laws of Motion
(103)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Magnetic flux φ (in weber) linked with a closed circuit of resistance 10 Ω varies
- If oxygen has root mean square velocity of C m/s, then root mean square velocity of H
- A body of mass 0.25 kg is projected with muzzle velocity 100 m/s from a tank
- A current is flowing through resistance. A potential difference of 120 V
- The work done in which of the following processes is equal to the change in internal energy
Topics: Laws of Motion (103)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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