Laws Of Motion Question 303

Question: If the coefficient of friction between all surfaces is 0.5, then find the minimum force F to have equilibrium of system. (assume strings and pulleys are massless)

Options:

A) 400017N

B) 100017N

C) 200017N

D) 50017N

Show Answer

Answer:

Correct Answer: C

Solution:

[c] T=2f+500     ….(i)

8T=5000f -(ii)

f=12F -(iii)

From (i), (ii) and (iii) F=200017N



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