GEOG 216 Lecture 18: The Organization of Industry in the 20th Century

Force F = (2.0 N) + (-7.0 N) acts on a pebble with position vectorr = (1.10 m) + (-1.1 m) , relative to the origin.
(a) What is the resulting torque acting on the pebble about theorigin?
( 1 N · m) + ( 2 N · m) + ( 3 N · m)

(b) What is the resulting torque acting on the pebble about a pointwith coordinates (-1.0 m, -3.0 m, -3.0 m)?
( 4 N · m) + ( 5 N · m) + ( 6 N · m)

A luge and its rider, with a total mass of 115 kg, emerge from adownhill track onto a horizontalstraight track with an initialspeed of 40m/s. Assume that they stop with a constant decelerationof1.8 m/s².