A diver is 1.6 meters tall and has a mass of 60kg. a) Appoximating the diver as

Question

A diver is 1.6 meters tall and has a mass of 60kg.

a) Appoximating the diver as a rod of length 1.6m rotating around its center, estimate the diver's rotational inertia when she is stretched out.

b) The diver goes into the tuck position. Appoximating as a solid sphere of radius 0.4m, estimate the diver's new rotational inertia in the tuck position.

c) The diver begins rotating in the position at a rate of 4 revolutions per second. When she stretches out, determine her new rotational speed.

d) Explain why it is easiest for divers to somersault in the tuck position, less easy in the "pike" position (leg straight), and hardest in the "layout" position (body fully extended).

Explanation / Answer

a) 12.6 b) 9.6 c) new speed = 9.6*4/12.63.04 d) this is because thei moment of inertia is greatest in layout position and leadt in tucked position

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.