un :zino Which of the following torque vs. time graphs would produce the greatest change in angular momentum for a ball? (The maximum torque for each graph is the same.) time time time anbjoi anbjoi torque
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- A 2-kg block on a frictionless inclined plane at 45 has a cord attached to a pulley of mass 1 kg and radius 20 cm (see the following figure). (a) What is the acceleration of the block down the plane? (b) What is the work done by the gravitational force to move the block 50 cm?An 8.79cm diameter floppy disk rotates at its fastest at 470 rpm. Part A: Express the angular velocity of the disk in revolutions per seconds? Part B: What is the time period of this revolution? Use scientific notation for your answer. Part C: What is the linear velocity of a point at the rim of the disk? What is the angular velocity at the center of the disk? If the disk took 3.2 sec to spin up to 470 rpm from rest, what was the average angular acceleration? How many revolutions did the disk complete within this time? What is the net displacement? If you turn off the floppy disk drive and the disk comes to a stop in 6.7 s, what is the average angular acceleration for this period of motion?Please help me with this and show me your solution. Thank you! From the simulation in the picture, what is the force (N), level arm (m), and Torque (N-m) of the 3 bricks? Complete the table.
- Please Use algebra not calculus to answer the following: The picture shows a view from above of a non-uniform object (a rectangular slab with objects placed on it) dropped onto a platform rotating on a low-friction bearing. The mass of the rotating disk is 2.85 kg. 1. Show a Force Diagram 2. Make measurements and calculations to determine the rotational inertia of the slab (including the objects on the slab). Explain your process and results. (Please use the given diagrams to find the rotational inertia) 3. Describe the major assumptions you made during your process. 4. Do you think the actual value of the rotational inertia of the slab (with the objects on it) is more likely to be greater than your value, or less than your value? Support your assertion.A car starts from rest and in 75 seconds it travels 1 mile. The wheels of the car have a diameter of 30 inches. Show all work and any unit conversions step by step. a) How many revolutions did the wheel make in that 1 mile distance?b) What was the final linear velocity of the car after the 75 seconds in units of feet per second?c) What was the final angular velocity of a point on the outer edge of the wheels in units of rpm?The rope shown in Figure below is wound around a cylinder of mass 4.0 kg and I = 0.020 kg m2, about the cylinder axis. If the cylinder rolls without slipping, (a)what is the linear acceleration of its center of mass? What is the frictional force? Use an axis along the cylinder axis for your computation.(b) What happens if the frictional force between table and cylinder is negligible? Choose any axis tor yourcomputation.
- A record player works at a clockwise angular speed of 3.53 rad/s, and takes 1.06 s to steadily accelerate up to that working speed when it is first switched on. Use radians as the standard unit for angles. ( I already answered the first four... but I am confused on how you find) What angle does the record rotate through during the acceleration period, in given units? for rad, rev, and anglePLEASE PUT SOLUTION (WHY) // WHY THE REASON OF THAT ANSWER (?) 1. What should be done to increase the generated torque on a bar, with one end fixed to a point, without increasing the applied force? A. Make the moment arm shorter. B. Increase the weight of the moment arm. C. Move the axis of rotation closer to the point where force is applied. D. Increase the length of the moment arm. 2. How will the generated torque change if you move the axis of rotation from the middle of a bar to its left end, given that the applied force is applied at its right end? A. Torque will be doubled. B. Torque will increase 1.5 times the original. C. Torque will remain the same. D. Torque will be halved.Using the equations attached solve the following: 1.What is the average angular velocity between t = 2.0 s and t=3.1 s ? Express your answer using two significant figures. 2.What is the average angular acceleration between t = 2.0 s and t =3.1 s ? Express your answer using two significant figures.
- An 8.79cm diameter floppy disk rotates at its fastest at 470 rpm. Part A: Express the angular velocity of the disk in revolutions per seconds? Part B: What is the time period of this revolution? Use scientific notation for your answer. Part C: What is the linear velocity of a point at the rim of the disk? Part D: What is the angular velocity at the center of the disk? Part E: If the disk took 3.2 sec to spin up to 470 rpm from rest, what was the average angular acceleration? How many revolutions did the disk complete within this time? What is the net displacement? Part F: If you turn off the floppy disk drive and the disk comes to a stop in 6.7 s, what is the average angular acceleration for this period of motion?Two big bugs, Buzz and Crunchy each of mass 0.65 kg, are siting on a spinning disk on a horizontal plane. Buzz is sitting halfway and Crunchy is sitting at the outer edge as shown. The radius of the disk is 7.2 m and it rotates once every 1.2 s. What is the magnitude of the net force on Buzz, in Newtons? 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.Shaina tied a 3.4 g rock to a 6.7 m rope and swung it around at a rate of 10.4 rad/s. Solve the following a.) if she shifts the rate to 14.5 rad/s, compute for the kinetic energy. b.) Given the shift of angular velocity in part b, the angular acceleration is?