Homework Help: Physics

Posted by Emily on Sunday, January 13, 2013 at 9:42pm.

According to the Guinness Book of World
Records (1990 edition, p. 169), the highest
rotary speed ever attained was 2010 m/s (4500
mph). The rotating rod was 15 cm (5.9 in)
long. Assume the speed quoted is that of the
end of the rod.
What is the centripetal acceleration of the
end of the rod?
Answer in units of m/s
2
If you were to attach a(n) 0.976 g object to the
end of the rod, what force would be needed to
hold it on the rod?
Answer in units of N
What is the period of rotation of the rod?
Answer in units of s

Physics - Jennifer, Tuesday, January 15, 2013 at 8:52pm
v = 2*PI*r/T

where T is the period

2010 = 2*PI*0.15/T

centripetal acceleration = v^2/r

Force = m*v^2/r

Answer this Question

Related Questions

Algebra - According to the Guiness Book of World Records, the peregrine falcon ...
physics - Suppose 3 mols of neon (an ideal monatomic gas) at STP are compressed ...
Writing - How can I end this? ____ The bridge I made a model of is the Sydney ...
spanish sra JMcGuin - 1. Approximately what percentage of the world's ...
AP World History - Hi! I'm currently a freshmen in high school and next year...
physics - a body of mass 5kg is thrown vertically upwards with a speed of 10m/s...
physics - a body of mass 5kg is thrown vertically upwards with a speed of 10m/s...
Calculus - assume the rate at which the world's oil is being consumed is r...
Science - a body of mass 5 kg is thrown vertically upwards with a speed of 10m/s...
physics - A 47.0 g golf ball is driven from the tee with an initial speed of 54....

For Further Reading

First Name:
School Subject:
Answer: