7. Friction, Inclines, Systems
Kinetic Friction
7. Friction, Inclines, Systems Kinetic Friction
16PRACTICE PROBLEM
A bead moves along the x-direction in an oil medium of viscosity ηoil = 45.4 ×10-3 Pa•s. The bead's radius is 2.0 mm, and its mass is 15.0 g. At time t = 0 s, the velocity of the bead is 25.0 cm/s. Calculate the time required for the bead to reach a velocity of 12.5 cm/s. Neglect the gravitational force.
A bead moves along the x-direction in an oil medium of viscosity ηoil = 45.4 ×10-3 Pa•s. The bead's radius is 2.0 mm, and its mass is 15.0 g. At time t = 0 s, the velocity of the bead is 25.0 cm/s. Calculate the time required for the bead to reach a velocity of 12.5 cm/s. Neglect the gravitational force.