Two particles of mass 1 kg each are attached to a massless rod a distance of 1 m and 2m respectively from the axis of rotation. The angular speed of the system is 1 rad/s. What is the angular momentum of the system? (in SI units) a) 1 b) 2 c) 3 d) 4 e) 5
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- A disk at rest experiences a constant angular acceleration for t = 35 s, at the end of which it is spinning with a frequency of f = 35 rpm. Please answer the following questions. 1) Write an expression for the magnitude of the angular velocity of the disk after the acceleration in terms of the frequency. ω = 2) Calculate the magnitude of the angular velocity of the disk in rad/s at time t = 35 s. ω = 3) Write an expression for the average angular acceleration of the disk αave in terms of angular velocity. αave =a) a b) b c) c 2. Two different disks (one is larger than the other but the same mass) are placed flat on ice. If the same force F is applied to each disk as shown. Mark the statement(s) that are correct. (a) (b) (c) (d) (e) (f) disk 1 Ⓒ disk 2 disk 1 will have more linear acceleration disk 2 will have more linear acceleration disk 1 will have more angular acceleration disk 2 will have more angular acceleration they both have the same linear acceleration they both have the same angular acceleration 1A clown sits on a unicycle and rides it BACKWARDS (moving in the opposite direction he is facing). The wheel spins around its fixed rotation axis in normal fashion. In which direction does the angular momentum vector of the unicycle wheel point? Group of answer choices a) To his/her right b) To his/her left c) foward (the direction he is facing) d) backward (the direction of motion) e) In the upward direction (toward the sky)
- An ice skater performs a “scratch spin” (a tight, fast spin) by pulling her outstretched arms close to her body. Disregarding any frictional effects, what happens to her angular momentum during this process? A) It remains constant. B) It increases. C) It decreases. D) Didn’t Professor Jag say he was going to try and trick us with this question?The planet earth orbits around the sun and also spins around its own axis Part a: calculate the momentum of the earth in its orbit around sun in kg* m^/s Part b: calculate the angukae momentum of the eart spinning on it axis kg *m^2/s Part c : how many times larges is the angular momentum of the earth in its orbit than the angular momentum of the earth around axis?A disk at rest experiences a constant angular acceleration for t = 35 s, at the end of which it is spinning with a frequency of f = 35 rpm. Please answer the following questions. 1) Write an expression for the magnitude of the angular velocity of the disk after the acceleration in terms of the frequency. ω = 2) Calculate the magnitude of the angular velocity of the disk in rad/s at time t = 35 s. ω = 3) Write an expression for the average angular acceleration of the disk αave in terms of angular velocity. αave =