Question

12. A light stright fixed at one end to a wooden clamp on a ground passes overa fixed pulley and hang
at the other side. It makes an angle 30° with the ground. A boy weighing 60 kg climbs up
The wooden clamp can tolerate upto vertical force 360N. Find the maximum acceleration in the
upward direction with which the boy can climb safely. The friction of pulley and wooden clamp
may be ignored (g=10 m/s2)
1) 1 m/s2
2) 2 m/s2
3) 3 m/s2
4) 4 m/s2​

Answer 1

Answer:

θ=30

o

T=m(g+a)

T=60(10+a)

Tsinθ=360 N

T=360×2=m(g+a)

720=60(10+a)

10+a=12

a=2m/s

2

Explanation:

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