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1. ### Physics rotation help?

r = 9.5*3.6*10^19 = 3.42*10^20 m ω = 1.1*10^-15 rad/sec tangential speed Vt = ω*r = 3.42*1.1*10^5 = 3.76*10^5 m/sec = 376 km/sec g = Vt^2/r = 3.76^2*10^10/(3.42*10^20) = 4.13*10^-10 m/sec^2 F = g*Ms = 4.13*1.06*10^(30-10) = 4.38*10^20 N

2 Answers · Science & Mathematics · 28/04/2019

2. ### Rotation and springs Physics Problem?

Solved here: http://www.phys.lsu.edu/~jzhang/Lecture28_2101.pdf page 8 upshot: ω = √(3k / m) and since period T = 2π/ω, T = 2π*√(m / 3k) and so here T = 2π * (0.720kg / 3*1450kg/s²) = 0.0808 s or 80.8 ms If you find this helpful, please award Best...

1 Answers · Science & Mathematics · 04/03/2020

3. ### Rotation speed of a tracking object?

Angular velocity is ω = (v/r) sin θ, in radians per (whatever time unit v is measured in); where θ is the angle between the velocity and the radius vector. At the minimum distance, θ is a right angle and sin θ = 1, so: ω = (10 m/s)/(2 m) * 1 = 5 radians/s

1 Answers · Science & Mathematics · 05/08/2019

4. ### A person has a mass of 60 kg. If the person is on the equator, by how much the person's weight is changes because of earth's rotation?

Weight changes by an amount equal to the centripetal force, F: F=mv²/r = mω²r. ω = 2π/T.where T = period = 24h = 24*60*60s = 86400s F = mω²r = 60 * (2π/86400)² * 6.4*10^6 = .2.0N This is...

3 Answers · Science & Mathematics · 10/05/2019

5. ### Physics,Rotation Problem:A thin uniform stick of mass M and length l is positioned vertically?

Welcome to Yahoo!Answers. I would try equating the initial GPE to the final KE: mgℓ/2 = ½mv² + ½Iω² where v is the velocity of the center of mass For a rod rotating about...

2 Answers · Science & Mathematics · 01/04/2020

6. ### Physics: Circular motion... a flaw?

... sense. Using a string to whirl a ball in a circle, the centre of rotation is *not fixed* when the speed changes. If you imagine...

5 Answers · Science & Mathematics · 06/05/2019

7. ### help with physics?

... a regulator the volts are proportional to the square of the rotational rate. This is because the increasing rate of rotation puts...

3 Answers · Science & Mathematics · 08/05/2019

8. ### What is the reason why the motion of the Earth is slowing down each year?

... of thousands of years, the Earth's rotation slows down by 1 second every 40,000 years, due to tidal friction...

9 Answers · Science & Mathematics · 29/07/2019

9. ### Physics Help!?

... from rest, what is the time it took for the first rotation of the disk? t = time = to be determined ω = ω0 + αt (ω - ω0...

3 Answers · Science & Mathematics · 16/12/2019

10. ### rotational kinematics of disk and rod?

...the center of the length of the rod lands and stays on the center of rotation of the disk. L = ΣIω L = (½mR²...

1 Answers · Science & Mathematics · 07/08/2019