Question

How can you lower a 100 kg body from the roof of a house using a cord with a breaking strenght of а 80 kg weight without breaking the rope ? (1 kg weight = g N) [ ] 1) 1.96 m/s2 downwards 2) 9.8 m/s2 downwards 3) 4.9 m/s2 downwards 4) 19.6 m/s2 downwards​

Answer 1

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Answer 2

Answer:

downwards

REF.Image.

The FBD of situation will be as

So, the transitional eq

n

will be

Mg - T max = ma

⇒100g−80g=(100)a

⇒

100

20

g=a

As g=9.8m/s

2

a=0.2×9.8m/s

2

=1.96m/s

2

It is acting downwards

Explanation:

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