A 60-kg engineering student decides to bungy jump from the famous Kawarau Bridge in Queenstown. The bridge is 43 m above the river and the operators choose a 30-m long cable for her (i.e. she will free-fall the first 30 metres). After the cable is taught, her downward acceleration is given by 9.81 – 6.4s m/s² where s is measured from point B as shown on the right. Assume her initial velocity at A is zero. Ignore air resistance and any horizontal motion. Treat the student as a particle. - (a) Calculate her velocity at point B. (b) Calculate the smallest clearance, d, between her centre of mass and the river.

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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. A 60-kg engineering student decides to bungy jump from the famous
Kawarau Bridge in Queenstown. The bridge is 43 m above the river and
the operators choose a 30-m long cable for her (i.e. she will free-fall the
first 30 metres). After the cable is taught, her downward acceleration is
given by 9.81 – 6.4s m/s? where s is measured from point B as shown on
the right. Assume her initial velocity at A is zero. Ignore air resistance
and any horizontal motion. Treat the student as a particle.
A
(a) Calculate her velocity at point B.
(b) Calculate the smallest clearance, d, between her centre of mass and
the river.
30 m
43 m
Drawing not to scale
Transcribed Image Text:. A 60-kg engineering student decides to bungy jump from the famous Kawarau Bridge in Queenstown. The bridge is 43 m above the river and the operators choose a 30-m long cable for her (i.e. she will free-fall the first 30 metres). After the cable is taught, her downward acceleration is given by 9.81 – 6.4s m/s? where s is measured from point B as shown on the right. Assume her initial velocity at A is zero. Ignore air resistance and any horizontal motion. Treat the student as a particle. A (a) Calculate her velocity at point B. (b) Calculate the smallest clearance, d, between her centre of mass and the river. 30 m 43 m Drawing not to scale
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