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Question: A mass 1 kg is suspended by a thread. It is (i) Lifted up with an acceleration 4.9 ms<sup>–2</sup> ...

A mass 1 kg is suspended by a thread. It is

(i) Lifted up with an acceleration 4.9 ms–2

(ii) Lowered down with an acceleration 4.9 ms–2

The ratio of tensions in the thread is -

A

3 : 1

B

1 : 3

C

1 : 2

D

2 : 1

Answer

3 : 1

Explanation

Solution

T1 = m(g + a0) and T2 = m (g – a0)

\ T1T2=m(g+a0)m(ga0)=31\frac{T_{1}}{T_{2}} = \frac{m(g + a_{0})}{m(g - a_{0})} = \frac{3}{1}