The crate C has a weight of 150 lb and rests on the truck elevator. Determine the initial friction and normal force of the elevator on the crate if the parallel links are given an angular acceleration a = 2 rad>s 2 starting from rest.

Lecture 17: Test Review Lecture 18: (skipped) Lecture 19: Graphical Integration and Differentiation Graphical Integration and Differentiation Integral: area under a curve Derivative: slope of the tangent line to a curve Common integral/Derivative relationships Acceleration : ∫dt : velocity : ∫dt : distance Distance : d/dt : velocity : d/dt : acceleration Force : ∫dx : work Power : ∫dt : energy Energy : d/dt : power Current : ∫dt : charge Charge : d/dt : current Integral of a square If you know how to calculate the area of something, you can find the integral For a constant speed and a given time, you can calculate distance traveled just by multiplying the 2 values - the area of a square Integ