Physics, 09.12.2021 06:40 xwilliams83
Two horizontal curves on a bobsled run are banked at the same angle, but one has twice the radius of the other. The safe speed (no friction needed to stay on the run) for the smaller radius curve is v. What is the safe speed on the larger radius curve?
A) v/2
B) v /β 2
C) 2v
D) vβ2
I shall answer it here so this can help other students out
First, FN = mg/cos
On a banked curve, FNx is the only acceleration force
FNx = mv^2/r
FNx = FNsin
mg/cos * sin = mv^2/r
cancel out the mass (m) and sin*1/cos is tan
gtan = v^2/r
rgtan = v^2
β(rgtan) = v (this is the velocity for the smaller radius.)
call larger radius velocity X
for larger radius, it becomes 2r, so β(2rgtan) = X
understand you can do βxy = βx * βy
β(rgtan) * β2 = X (β(rgtan) = v)
v * β2 = X (where X is velocity with larger radius)
Answers: 3
Physics, 22.06.2019 09:00
Atelevision set that has been running for a while heats up even the air around it. which two laws of thermodynamics could be used to analyze this scenario
Answers: 1
Physics, 22.06.2019 11:50
The electric field between square plates of a parallel-plate capacitor has magnitude e. the potential across the plates is maintained with constant voltage by a battery as they are pulled apart to twice their original separation, which is small compared to the dimensions of the plates. the magnitude of the electric field between the plates is now equal to a)e b)e/4 c)e/2 d)4e e)2e
Answers: 1
Physics, 22.06.2019 15:00
What happens when a rubber rod is rubbed with a piece of fur?
Answers: 1
Physics, 22.06.2019 18:10
Aa a of 22 m/s at an of 36.9 .be . a. b. c. (3)x y of? (3)go? (4) () it to to ?
Answers: 1
Two horizontal curves on a bobsled run are banked at the same angle, but one has twice the radius of...
Geography, 05.11.2020 18:30
Mathematics, 05.11.2020 18:30
Spanish, 05.11.2020 18:30
Mathematics, 05.11.2020 18:30
Computers and Technology, 05.11.2020 18:30
Mathematics, 05.11.2020 18:30
Computers and Technology, 05.11.2020 18:30
Mathematics, 05.11.2020 18:30
Mathematics, 05.11.2020 18:30