# Physics

(i)For the wheel of diameter 10 cm, find its final speed after traversing a distance of 10 m down an incline of 25º. Assume it starts from rest.

I know i have to use the conservation of energy but how?
i don't understand where to start off

1. 👍 0
2. 👎 0
3. 👁 137
asked by Oisin
1. loss of GPE= gainoflinearKE+gainrotationalKE

You are going to have to decide if the wheel is a hoop, or a solid disk to find the moment of inertia.

Remember, for each 2PI radians of rotation, the wheel moves linearly 2PIr distance.

if w is the angular speed, then rw is the linear velocity.

g*m*10cos25=1/2 I w^2+1/2 M(rw)^

and once you decide solid wheel or hoop, you fill in for I, and then solve for w.

1. 👍 0
2. 👎 0
2. Wow thanks very much
I was usig the wrong formula for loss of PE that's where i went wrong its always helpful to have people to tell you where youve gone wrong

1. 👍 0
2. 👎 0
posted by Oisin

## Similar Questions

1. ### Physics

(ii) For the wheel of diameter 10 cm, find its final speed after traversing a distance of 10 m down an incline of 25º. Assume it starts from rest. I know i have to use the conversation of enrgy formula but how do i apply it to

asked by Oisin on August 9, 2010
2. ### Physics

(b) Given that Icm = ½MR2 for a uniform solid wheel, (i) show that the rotational kinetic energy is half the translational kinetic energy for such a wheel. (ii) For the wheel of diameter 10 cm, find its final speed after

asked by Oisin on July 20, 2010
3. ### math

One wheel has a diameter of 30 inches and a second wheel has a diameter of 20 inches. The first wheel traveled a certain distance in 240 revolutions. In how many revolutions did the second wheel travel the same distance? not just

asked by vincent on July 29, 2013
4. ### Trig application

I'm having trouble with this trig application. The scenario goes: A ferris wheel has a diameter of approximately 65 meters. Assume it takes 110 seconds for the ferris wheel to make one complete rotation. find the angular speed of

asked by Jane on March 3, 2016
5. ### physics

If the rotational speed of each wheel is 9 revolution per second, what are the tangential speeds of a point on the rim of each wheel? Note: Wheels spin independently with equal rotation speeds -Diameter of Wheel A: 24 -Diameter of

asked by kelly on March 3, 2011
1. ### physics

If the rotational speed of each wheel is 9 revolution per second, what are the tangential speeds of a point on the rim of each wheel? Note: Wheels spin independently with equal rotation speeds -Diameter of Wheel A: 24 -Diameter of

asked by kelly on March 2, 2011
2. ### physics

a wheelof diameter 0.70 meterolls without slipping. a point at the top of the wheel moves with a tangential speed of 2.0 meter/second. a) at what speed is the axis of the wheel moving? b) What is the angular speed of the wheel?

asked by Anonymous on March 24, 2014
3. ### math

The wheel in the figure has a diameter of 1 yard. The wheel is rolled forward as shown until the point marked A has undergone exactly one revolution around the wheel's axis. What number is represented by the distance in yards that

asked by Anonymous on May 25, 2016
4. ### maths

find the number of revolutions taken by the wheel of a truck to cover a distance of 78.5 km if the diameter of the wheel is 1m

asked by shehzad on February 8, 2015
5. ### Physics

At a county fair, a boy and two friends bring their teddy bears on the giant Ferris wheel. The wheel has a diameter of 14.3 m, the bottom of the wheel is 1.9 m above the ground and its rim is moving at a speed of 1.0 m/s. The boys

asked by Jean on October 27, 2011

More Similar Questions