. A 60-kg engineering student decides to bungy jump from the famousKawarau Bridge in Queenstown. The bridge is 43 m above the river andthe operators choose a 30-m long cable for her (i.e. she will free-fall thefirst 30 metres). After the cable is taught, her downward acceleration isgiven by 9.81 – 6.4s m/s? where s is measured from point B as shown onthe right. Assume her initial velocity at A is zero. Ignore air resistanceand 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 andthe river.30 m43 mDrawing not to scale

Answered: Image /qna-images/answer/fa6591b7-7ef3-4cc0-bf45-7dc7e7318747.jpg

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.

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.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Conservation of Energy

In physics, the rule of the conservation of energy states that energy doesn’t disappear from the atmosphere; instead, it changes its form from one type to another. Energy is one of the most important physical quantities in nature, and it cannot be created or destroyed — only transformed.

Question

. 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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