Posted by jhay on Friday, July 8, 2011 at 2:45am.
A ball (mass m = 250 g) on the end of an ideal string is moving
in circular motion as a conical pendulum as in the gure. The
length L of the string is 1.67 m and the angle with
the vertical is 37 degrees
A) What is the magnitude of the angular momentum (kg m2/s) of the ball about the
support point?

What I have so far.
L = r X P
P = m * v
V = (r*g*tan)^.5
What I am having problems on is finding r, since its at the support point, it will not be the radius of the circle.

Physics  bobpursley, Friday, July 8, 2011 at 9:44am
r=1.67*sin37

Physics  jhay, Friday, July 8, 2011 at 8:36pm
r would equal that if we were looking at the momentum of the ball about the circle and not at the support point

Physics  bill, Tuesday, November 12, 2013 at 11:25pm
Use the length of the string for "r".

Physics  bill, Tuesday, November 12, 2013 at 11:26pm
except for in your equation for the velocity; use the radius of the circle there