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1. ### Help!!!!!!!!!?

...inertia in kg•m² I = cMR²     M is mass (kg), R is radius (meters)     c = 1 for a ring or hollow cylinder     c = 2/5...

1 Answers · Science & Mathematics · 18/05/2020

2. ### Consider a freely spinning merry-go-round, which can be treated as a uniform disc of radius R and mass m1 rotating about a vertical?

4. Li = m2 v R/ 4  m2*v*R/4 = (½*m1*R² + m2*(R/4)²...R/16)*w 4v = (8R+R)*w = 9Rw w = 4v / 9R for v=6 R=12 w = 4*6 / 9*12 = 2/9 = 0.22 rad/s

1 Answers · Science & Mathematics · 13/05/2020

3. ### rockets velocity?

...after engine shutoff, KE + GPE = constant ½mv² - GmM/R = k and if we divide through by the rocket's mass m we get v²/2 - GM...

1 Answers · Science & Mathematics · 12/05/2020

4. ### How does gravity keep us on Earth.?

... middle school we learn Newton's model.  W = mGM/R^2 where you, for example, are the mass m and M is Earth...

5 Answers · Science & Mathematics · 10/05/2020

5. ### Can you find my mistakes in this physics problem?

...force) is equal to the centripetal force: GmM / R² = mv²/R rock mass m cancels, and so M = v²R / G M = (12m...

1 Answers · Science & Mathematics · 07/05/2020

... R1 = 2R2 = 4R3 = 8R4 Let R4 = RΩ =>R1 = 8R Ω =>R2 = 4R Ω...

3 Answers · Science & Mathematics · 01/06/2020

7. ### A small car travels at constant speed on the inside of a track that is a vertical circle with radius 5.00 m. ?

m*V^2/r-m*g = 6  m(V^2/5-g) = 6 m = 6/(V^2/5-g)  ...where the quantity V^2/5-g must be positive (V^2/5 > g)

1 Answers · Science & Mathematics · 06/05/2020

8. ### physics experts?

...in this situation, so we just need to find the centripetal force: F = mv²/r = 9.11*10^-31 * (2.29*10^6)² / (5.23*10^-11) . .= 9.13*10^-8 N (b...

2 Answers · Science & Mathematics · 06/05/2020

9. ### Physics help?

...*2.00m*cos36.8º + 360N*(5.00m - 1.50m*cos53.13º) - R*5.00m where R is the vertical force under the right leg R = 449...

1 Answers · Science & Mathematics · 14/05/2020

10. ### If the blocks are released from rest, how long does it take the 4.0 kg block to reach the floor?

...0.06m - 0.60N·m) / 0.00342kg·m² so the linear acceleration a = α*r = α * 0.06m a = ([4.0kg*(9.8m/s² - a) - M*(9.8m/s² + a)]*0...

3 Answers · Science & Mathematics · 01/05/2020