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A body of mass 1.0 kg is falling with an acceleration of 10 ms⁻². Its apparent weight will be (g=10 ms⁻²)
Options
(a) 1.0 kg wt
(b) 2.0 kg wt
(c) zero
(d) 0.5 kg wt
Correct Answer:
zero
Explanation:
R = m (g – a) = m (10 – 10) = zero
This answer is an extension of the lift problem. Actually mg is the force acting on the mass m. As potential energy decreases, its kinetic energy increases as experienced. The question is not correct.
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Topics: Laws of Motion
(103)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Two cells, having the same e.m.f. are connected in series through an external resistance
- The focal length of the objective of a terrestrial telescope is 80 cm
- If the ionisation energy for the hydrogen atom is 13.6 eV, the energy required
- A boat which has a speed of 5 kmh⁻¹ in still water crosses river of width 1 km long
- An alternating electric field, of frequency v, is applied across the dees (radius = R)
Topics: Laws of Motion (103)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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