Ask Experts Questions for FREE Help !
Ask
    lhtran23's Avatar
    lhtran23 Posts: 6, Reputation: 1
    New Member
    		  
    #1

    May 7, 2008, 09:26 PM
    Work and Center of Mass
    A 0.5kg weight has a string of negligible mass attached to it. You grab the other end of the of the string and swing your arm, giving the weight a speed of 4m/s and lifting its center of mass by 1.2m. What is the work done by the tension in the string onto the weight?
    ebaines's Avatar
    ebaines Posts: 12,131, Reputation: 1307
    Expert
    		  
    #2

    May 8, 2008, 06:05 AM
    We'll be glad to help you with this, but only if you first attempt to solve it on your own. What methods have you tried? Where did you get stuck? Show some effort, and I'm sure someone will help you out.
Not your question? Ask your question View similar questions
 

Question Tools Search this Question
Search this Question:

Advanced Search

Add your answer here.


Check out some similar questions!

2D Rotation about center of mass [ 1 Answers ]

Hey Everyone! I've posted this question on both the physics and math sites, but I'm hoping that by fishing in all three that I might get an answer sooner! With that in mind... I'm trying to figure out how to calculate the resultant polar coordinates of a triangle following the triangle's...

Changing Your Center of Mass [ 2 Answers ]

"To keep the calculations fairly simple, but still reasonable, we shall model a human leg that is .92m long (from hip joint) by assuming that the upper leg and the lower leg (including the foot) have equal lengths and that each of them is uniform. For a 70kg person, the mass of the upper leg would...

2D rotations about the center of mass [ 1 Answers ]

Hey all, I've place this post on the Math site, but I'm hoping that I might get an answer from someone here sooner! I'm trying to figure out how to calculate the resultant polar coordinates of a triangle following the triangle's 45 degree rotation about it's own center of mass. I've seen...

How do I rotate a 2D triangle around its center of mass? [ 0 Answers ]

Hello! I'm trying to figure out how to calculate the resultant polar coordinates of a triangle following the triangle's 45 degree rotation about it's own center of mass. I've seen how to rotate the triangle using: In 2D, you make (X,Y) from (x,y) with a rotation by angle t so: X =...

Mass [ 4 Answers ]

What mass of lead(II) nitrate is present in 20.0mL of a solution? See below. Two different lead(II) nitrate solutions are used, each sample is reacted with an excess quantity of a potassium iodide solution, which produces lead(II) iodide.

View more questions Search