Two masses m, and m, with m, > m, are on a turntable (CD-DVD) that steadily speeds up, starting from rest, with a counterclockwise rotation. Which coin flies off the turntable first? G-GAO Select one: O a. ขึก More information is needed. Ob. Both fly out at the same time. О с. Definitely m₂. Od. Definitely m₁. 12 √₁2
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- You re out in space, on a rotating wheel-shaped space station of radius 679 m. You feel planted firmly on the floor , due to artificial gravity. The gravity you experience is Earth-normal, that is, g = 9.81 m/s^2. How fast is the space station rotating in order to produce this much artificial gravity? Express your answer in revolutions per minute (rpm). 0.120 rpm 81.6 rpm 0.459 rpm 1.148 rpm13. A skier/snowboarder starts at rest at the top of a snowy (friction-free) hill with height h₁. After the bottom of this hill there is a small "jump" hill. The top of the jump has height h, and a curvature of radius R. What is the minimum height of the starting hill, himin, so that the skier/snowboarder jumps or "catches air" at the top of hill 2? Solve for himin in terms of h₂, R, and g. Hint: if the skier/snowboarder jumps, he/she/they loose contact with the snowy ground. h₁ to jump!Different situation now. You re out in space, on a rotating wheel-shaped space station of radius 743 m. You feel planted firmly on the floor , due to artificial gravity. The gravity you experience is Earth-normal, that is, g = 9.81 m/s^2. How fast is the space station rotating in order to produce this much artificial gravity? Express your answer in revolutions per minute (rpm). 0.115 rpm 85.4 rpm 0.549 rpm 1.097 rpm
- 3. A satellite is launched from the surface of the earth at the initial speed of 8 km/s. How high will it go before it stops and starts falling back to the earth?A disk spins at 4.0 revolutions/second. What is its period, in second? Your answer needs to have 2 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement.George swings a ball around him, in uniform circular motion. The circle's radius is r. George inadvertently releases the string, and the ball goes outward. He catches the string again, and now the ball goes around him at a new rotation rate, with a new radius r + Δr. Calculate the new rotation rate (in rev/s). r = 3.0 m Δr = 1.0 m Original rotation rate = ωi = 1.1 rev/s The ball's mass is m = 160 grams
- The 32-inch ceiling fan spins at 60 RPM and accelerates steadily to 130 RPM in nine seconds. A. Determine the speed (ft / s with two decimal places) for the point 15 inches from the center of the fan 16 seconds after the beginning of the above movement. B. Specify the time (s with two decimal places) for the fan to rotate 125 revolutions. Draw a Free Body Diagram if necessary in part A or part B or both. Please urgent ??? thank youA circular disk of radius 0.010 m rotates at a rate of 5.0 rev/s. What is the acceleration of a point on the edge of the disk? a. 0.31 m/s2 b. 1.6 m/s2 c. 9.9 m/s2 d. 2500 m/s2 e. zero m/s2Question 20