# physics

Solve the equations
1
2
mv2 +
1
2
Iω2 = mgh
and
v = rω
for the speed v using substitution, given that
I = mr2
and
h = 4.20 m.
(Note that mass m and radius r will both cancel, so their numerical values aren't required.)

1. 👍 0
2. 👎 0
3. 👁 221

## Similar Questions

I am solving a problem and someone tol me to use this formula MgH = (1/2)*k*(H-2-10)^2 + Mg*2 where did this equation come from. Its not in my book. What concepts does it use? Is it solved correctly? MgH = (1/2)*k*(H-2-10)^2 +

2. ### Physics - repost to MathMate or whoever can help

A 10-kg iron ball is dropped onto a pavement from a height of 100 m. Suppose half of the heat generated goes into warming the ball. Show that the temperature increase of the ball is 1.1oC. (In SI units, the specific heat capacity

asked by Ceres on September 24, 2009
3. ### Physics: Work

1st question: I was solving a question and I was asked the work done by friction. It is natural that work done by friction (a retarding force)should be negative and in my answer it was. However, just to be sure, work can be

asked by Matt on March 12, 2007
4. ### AP physics

Solve the equations 1/2mv2 + 1/2Iω2 = mgh and v = rω for the speed v using substitution, given that I = mr2 and h = 4.20 m. (Note that mass m and radius r will both cancel, so their numerical values aren't required.) m/s

asked by Amar on March 6, 2015
5. ### Physics HELP A,S.A.P!

Q: Tarzan, who weighs 688N, swings from a cliff at the end of a vine that is 18m long. From the top of the cliff to the bottom of the swing, he descends by 3.2m. The vine will break if the force on it exceeds 950N. a)Does the vine

asked by Krystal on November 2, 2006
1. ### physics repost

I am still trying to solve for H in this equation but I am still lost MgH = (1/2)*k*(H-2-10)^2 + Mg*2 I was told to expand the square on the right, gather terms, put it in the standard quadratic form, and use the quadratic

2. ### physics repost

I am still trying to solve for H in this equation but I am still lost MgH = (1/2)*k*(H-2-10)^2 + Mg*2 I was told to expand the square on the right, gather terms, put it in the standard quadratic form, and use the quadratic

3. ### chemistry

Rearrange and solve the following equation for λ: hvλ=mv2

asked by Abdul on September 5, 2014
4. ### Physics

A 5 kg mass is thrown up with a velocity of 4 m/s from a height of 30 m onto a spring with a relaxed length of 10 m, and a constant of 400 N/m. What will the maximum compression of the spring be? What will the speed of the object

asked by Bartholomew on January 15, 2009
5. ### math

please anwer these: 1) how can i multiply and divide polynomials containing radicals? 2) how can i solve radical equations? 3) how can i solve qudratic equations by factoring ? 4) how can i solve quadratic equations graphically ?

asked by chen on August 13, 2014

More Similar Questions