Navigate

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

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

AIPMT2009
admin:

Related Questions

  1. The bandgap in Germanium and silicon, in eV, are respectively
  2. In L-C-R series circuit, an alternating emf e and current i are given by the equations
  3. Two vessels separately contain two ideal gases A and B at the same temperature,
  4. Thin uniform rod of length L, cross-sectional area A and density ρ is rotated
  5. The density of ice is 0.9 g/cc and that of sea water is 1.1 g/cc