A disk with a radius of r Hz. Suddenly at a time to which we choose to be to = 0 s, a force is applied to the wheel such that it gives the wheel an angular acceleration of a = -2 rad/s, thereby slowing it down. 42 cm rotating about its central axis with a frequency of 20 (a) What is the translational speed of the disk after 30 seconds? (b) What is the time required for the disk to come to rest?

A rock tied to the end of the string swings at a constant angular rate. If you are told that the string can support a total of 100 N of force before breaking, what is the maximum angular velocity the rock can rotate if the rock has a mass of 0.2 kg, and the length of the string is 0.5m? Give your answer in units of radians per second.

A rock tied to the end of string swings at a constant angular rate. If you are told that the string can support a total of 85 N of force before breaking, what is the maximum angular velocity the rock can rotate if the rock has a mass of 0.16 kg, and the length of the string is 0.5 m? Give your answer in units of radian per second

A tire (R = 0.5 m) starts from rest and accelerates at 40 m/s? for 8 s. a) What is the total angular displacement? b) What is the velocity of the tire at 8 seconds? c) What is the angular acceleration?

A particle moves 6.7 m along a circle of radius 2.0 m. (Enter the magnitudes.) (a) Through what angle does it rotate (in rad)?  rad (b) If the particle makes this trip in 1.0 s at a constant speed, what is its angular velocity (in rad/s)?  rad/s (c) What is its acceleration (in m/s2)?  m/s2

The propeller of a World War II fighter plane is 2.50 m in diameter. (a) What is its angular velocity in radians per second if it spins at 1100 rev / min? Enter to 3 significant figures W (b) What is the linear speed of its tip at this angular velocity if the plane is stationary on the tarmac? Enter to 3 significant figures V= rad/s (c) What is the centripetal acceleration of the propeller tip under these conditions? Calculate it in meters per second squared Enter to 3 significant figures ac g m/s ac = ✔m/s² Compare the centripetal acceleration to the acceleration due to gravity g. Is the centripetal acceleration very large or very small compared to g? Enter to 3 significant figures = ✓ (d) State what force provided this centripetal acceleration.

A particle moves in a circle of radius 80 m with a constant speed of 30 m/s. (a) What is its angular velocity in radians per second about the center of the circle? rad/s (b) How many revolutions does it make in 30 s? rev eBook