Author Question: A car of mass 1 000 kg moves with a speed of 50 m/s on a circular track of radius 100 m. What is the ... (Read 154 times)

Davideckstein7 · **on:** Jul 28, 2018

A car of mass 1 000 kg moves with a speed of 50 m/s on a circular track of radius 100 m. What is the magnitude of its angular momentum (in kgm2/s) relative to the center of the race track?
a. 5.0 102
b. 5.0 106
c. 2.5 104
d. 2.5 106
e. 5.0 103

Question 2

A uniform rod (length = 2.4 m) of negligible mass has a 1.0-kg point mass attached to one end and a 2.0-kg point mass attached to the other end. The rod is mounted to rotate freely about a horizontal axis that is perpendicular to the rod and that passes through a point 1.0 m from the 2.0-kg mass. The rod is released from rest when it is horizontal. What is the angular velocity of the rod at the instant the 2.0-kg mass passes through its low point?
a. 1.7 rad/s
b. 2.2 rad/s
c. 2.0 rad/s
d. 1.5 rad/s
e. 3.1 rad/s