Physics, asked by vishalthakur7208, 22 days ago

Q.9. A single fixed pulley is used
because :
O1. It multiplies speed
O2. Its efficiency is 100%
O3. It multiplies effort
O4. It changes the direction of applied effort.

Answers

Answered by spoornamuthu

7

Answer:

3or2 is the answer sorry I didnot know confirm

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