Chapter 09, Problem 73 A rotating door is made from four rectangular glass panes, as shown...
A rotating door is made from four rectangular glass panes, as shown in the figure. The mass of each pane is 96.2 kg. A person pushes on the outer edge of one pane with a force of F = 125 N that is directed perpendicular to the pane. Determine the magnitude of the door's angular acceleration.
A rotating door is made from four rectangular glass panes, as shown in the figure. The mass of each pane is 75.9 kg. A person pushes on the outer edge of one pane with a force of F = 101 N that is directed perpendicular to the pane. Determine the magnitude of the door's angular acceleration.
PLEASE CIRCLE ANSWER AND UNITS Chapter 09, Problem 65 A cylindrically shaped space station is rotating about the axis of the cylinder to create artificial gravity. The radius of the cylinder is 103 m. The moment of inertia of the station without people is 4.96 x 10" kg-m2. Suppose 142 people, with an average mass of 51.0 kg each, live on this station. As they move radially from the outer surface of the cylinder toward the axis, the angular speed...
Chapter 09, Problem 83 Chalkboard Video Two spheres are each rotating at an angular speed of 21.9 rad/s about axes that pass through their centers. Each has a radius of 0.430 m and a mass of 1.66 kg. However, as the figure shows, one is solid and the other is a thin-walled spherical shell. Suddenly, a net external torque due to friction (magnitude-0.1 20 N·m) begins to act on each sphere and slows the motion down. How long does it...
help 13.Two spheres of mass M and radius R are both released from rest at the top of a hill and allowed to roll to the bottom. One of the spheres is hollow however, while the other is solid. Which of the spheres reaches the bottom first? A) The hollow one B) The solid one C) They reach the bottom at the same time D) It depends on the angle of inclination. E) It depends on the length of the...
A child pushes her friend (m = 25 kg) located at a radius r = 1.5 m on a merry-go-round (rmgr = 2.0 m, Imgr = 1000 kg*m2) with a constant force F = 90 N applied tangentially to the edge of the merry-go-round (i.e., the force is perpendicular to the radius). The merry-go-round resists spinning with a frictional force of f = 10 N acting at a radius of 1 m and a frictional torque τ = 15 N*m...
Help 13.Two spheres of mass M and radius R are both released from rest at the top of a hill and allowed to roll to the bottom. One of the spheres is hollow however, while the other is solid. Which of the spheres reaches the bottom first? A) The hollow one B The solid one C) They reach the bottom at the same time D) It depends on the angle of inclination. E) It depends on the length of the...