Homework Statement
Example: A 50 kg gymnast does giant circles around a horizontal bar. At the top of her swing her center of mass is 1.0 m above the bar traveling 1.2 m/s. what is the speed of her center of mass at the bottom of her swing where her center at mass is 1.0 m below the bar? ( No...
Homework Statement
If the kinetic coefficient of friction between ice skates and ice is 0.01, what is the average forward force necessary for a 500 Nt skater to maintain a constant forward velocity?
Homework Equations
f = (Uk)(N)
The Attempt at a Solution
f = (Uk) (N)
f = (0.01)...
Homework Statement
It is desired to have a pile driver strike a pile with a speed of 20 m/s. Assuming the driver to be in free fall, from how high above the pile should be released?
Homework Equations
Used v^(2) = V(o)^(2) + 2ax
v=final velocity
V(o) =initial velocity
a=acceleration...
When I got to the Physics Forum I didn't realize I wasn't suppose to post in the Physics General Forum and when I found out yesterday probably after 5 min. of posting it up I thought I deleted it by going to my "PDF" then "unsubscribing it" which I thought I deleted my other post and then I made...
Homework Statement
Question: A motorcycle traveling at 40 ft/s is given an average acceleration of 4 ft/s^(2) for 10 s. Find the final velocity.
Homework Equations
Average Velocity= [displacement][/total travel time
]
v= [[x][/2] - [x][/1]][/[t][/2]...