Question

a) 1 Kg
b) 2 Kg
c) 3 Kg
d) 4 Kg
A lamp hangs from a light chord from the roof of an elevator when the elevator is descending, it declerates
at 2.5 m/s2 before coning to rest. If the tension in string is 25N, calculate the mass of the lamp g=10 m/s²​

Answer 1

Answer:

answer is 2kg

Explanation:

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Answer 2

Explanation:

Sum of all forces = mass × acceleration

$f(net) = ma$

$mg - t = ma$

$10m - 25 = - 2.5m$

$12.5m = 25$

$m = \frac{25}{12.5} = 2 \: kg$

Therefore , second option is correct

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