Answer:

Explanation:
given,
mass of the weight = 8 Kg
distance = 0.55 m
angle below horizontal = 30°
torque about shoulder




torque about his shoulder join is equal to 
Answer:
if there is only one planet in the universe and the ball is there it will have 0 kinetic energy if the ball is in the very center of that planet only if the planet itself is absolutely motionless. its at its highest if the planet is moving away from the ball at a slightly faster speed forever. Between point A and B both potential energy and kinetic energy are at perfect 0.
Explanation:
never will have a measurable kinetic or potential energy status unless every single object is included in the calculation.
Answer:
D I think I might be wrong its been a while scense I did something like that
There is too much information given, it's hard to understand exactly which variables are important in this problem.
57 nuetrons and 44 elctrons just incase you need it there are 44 protons too.Hope this halps