BIO Human-Powered Centrifuge One of the hazards of prolonged weightlessness on long space missions is bone and muscle loss. To combat this problem, NASA is studying a human-powered centrifuge, like the one shown in Figure 6-61 . In this device one astronaut pedals a suspended bicycle-like contraption, while a second astronaut rides standing up in a similarly suspended platform. If the standing astronaut moves with a speed of 2.7 m/s at a distance of 2.9 m from the center of the device, what is the astronaut’s centripetal acceleration? Give your answer as a multiple of g , the acceleration due to gravity on the surface of the Earth. Figure 6-61 Problem 56 A human-powered centrifuge
BIO Human-Powered Centrifuge One of the hazards of prolonged weightlessness on long space missions is bone and muscle loss. To combat this problem, NASA is studying a human-powered centrifuge, like the one shown in Figure 6-61 . In this device one astronaut pedals a suspended bicycle-like contraption, while a second astronaut rides standing up in a similarly suspended platform. If the standing astronaut moves with a speed of 2.7 m/s at a distance of 2.9 m from the center of the device, what is the astronaut’s centripetal acceleration? Give your answer as a multiple of g , the acceleration due to gravity on the surface of the Earth. Figure 6-61 Problem 56 A human-powered centrifuge
BIO Human-Powered Centrifuge One of the hazards of prolonged weightlessness on long space missions is bone and muscle loss. To combat this problem, NASA is studying a human-powered centrifuge, like the one shown in Figure 6-61. In this device one astronaut pedals a suspended bicycle-like contraption, while a second astronaut rides standing up in a similarly suspended platform. If the standing astronaut moves with a speed of 2.7 m/s at a distance of 2.9 m from the center of the device, what is the astronaut’s centripetal acceleration? Give your answer as a multiple of g, the acceleration due to gravity on the surface of the Earth.
Gravitational Energy Conservation
A "super cannon" launches a ball vertically from Earth's
surface with a speed of v. Ignore air resistance and the
Earth's spin. At its highest point, the ball is a height of h
above the surface of the Earth.
Earth's mass is 5.97 x 1024 kg. Earth's radius is
6.37 × 106 m.
7
ย
m
S
8
Type your answer...
v
6,002™
S
Type your answer...
h
1.89×106m
h
x10m
-
2-D star cluster puzzle
Find the net gravitational force for III) Pentagon
Let m=mass of the star = 1.99 x 10^30 kg, l=earth to star distance=149.6 x 10^6 km, G=6.67 x10^-11 N m^2/kg^2. Note that the masses of each star are the same. Also, it is advised to use vectors and components. And you can just find the gravitational net force of one of the stars in the shape
College Physics: A Strategic Approach (4th Edition)
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