A fireman wants to slide down a rope. The breaking load for the rope is 3/4 of the weight of the fireman. With what minimum acceleration should he slide down
a)g b)3g/4 c) g/4 d)g/8
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1 Answers
187Tension (T)= 3/4th of m.g
net force on body
==> m.g-T=m.a
or, m.g-(3/4)m.g=m.a (m gets cancelled from both side)
or, g-(3/4)g=a
or, (4g-3g)/4=a
or, (g/4)=a
Raunaq Saha Thanks !!
Upvote·0· Reply ·2013-06-20 04:30:49