F = MA 2020 (Mock) Problems
Problem 1
Initially at rest, 
masses 
and 
hang on ends of a massless rope on a massless, smooth pulley and the mass hangs 
feet above the ground. Once the system is released, what is the speed of the block when it strikes the ground?
Problem 2
An equilateral triangle has a side length of 
. How high above the base of the triangle the center of mass of the triangle located?
Problem 3
A small object of mass 
is tied to a string of length and is whirled around a horizontal circle of radius 
with a constant speed 
, in a conical pendulum. The center of the circle is vertically below the point of support. What is the period of revolution?
