Question

One end of massless rope , which passes over a massless and frictionless pulley P is tied to a hook C while the other end is free maximum tension that the rope can bear is 360 N . with what value of maximum safe acceleration (in m/s²) can a man of 60 kg climb on the rope ? ​

Answer 1

Explanation:

ANSWER

If monkey move downward with acceleration a then its apparent eight deceases.

In that condition tension in string m(g−a) this should not be exceed over breaking strength of the rope i.e.,

360≥m(g−a)

360≥60(10−a)

360≥600−60a

60a≥600−360

60a≥240

a≥4m/s

2

Hence,

Answer 2

Answer:

If monkey move downward with acceleration a then its apparent weight decreases.

in that condition tension in string =m(g−a) this should not be exceed over breaking strength of the role

i.e., 360≥m(g−a)

360≥60(10−a)

a≥4m/s