Passage III
A solid cylinder is mounted on frictionless bearings. A thin string of negligible mass is wrapped around the cylinder and pulled with a constant force, as shown in Figure 1.
The force results in a torque, τ, on the cylinder that causes the cylinder to spin. The angular acceleration, α, of the cylinder is the change of the cylinder's rotational speed over time.
Tables 1, 2, and 3 give τ and α for various cylinder masses, cylinder radii, and forces, respectively. Table 4 shows the rotational speed of a particular cylinder at different times.
(Note: All of the cylinders described in Tables 1-4 have the same length.)
14. Based on Table 1, if a 2.0 N force were exerted upon a 5.0 kg cylinder with a radius of 0.050 m, α would be:
Your Answer is
Correct Answer is H
Explanation
Look at table 1, when the mass is 5.0 kg, it is just between 4.0 kg-6.0 kg, so at this time α should be between 13-20