Recent content by Muneerah

Ok so basically to find the Velocity I used X/t = V V= 4.907749077 m/s centripetal acceleration = V^2/r = 86.021432 m/s^2 and that is the right answer, thank you so much for helping me.

Homework Statement A ball on the end of a string is whirled around in a horizontal circle of radius 0.28 m. The plane of the circle is 1.44 m above the ground. The string breaks and the ball lands 2.66 m away from the point on the ground directly beneath the ball’s location when the...

I'm sorry, but it's ok I figured out what I was doing wrong.

Homework Statement A tire 0.319 m in radius rotates at a constant rate of 98.4 rev/min. Find the speed (relative to the tire’s axle) of a small stone lodged in the tread on the outer edge of the tire. Answer in units of m/s. Find the acceleration of the stone. Answer in units of m/s2...

so I found r which is 1.638m and I used 60s for T I got .00728 for the acceleration and this isn't the right answer, please tell me what is it that I'm not doing right thanks.

Homework Statement The speed of the tip of the minute hand on a town clock is 0.00182 m/s. What is the speed of the tip of the second hand of the same length? Answer in units of m/s. What is the centripetal acceleration of the tip of the second hand? Answer in units of m/s2...

I had to convert it, because they're asking for the angular speed in rev/minute

Yeah, I fixed the acceleration and I got 3906900m/m2 and blugged it in again, and my answer was still wrong.

Homework Statement What angular speed (in revolutions per minute) is needed for a centrifuge to produce an acceleration of 675 times the gravitational acceleration 9.8 m/s2 at a radius of 15.4 cm? Answer in units of rev/min. Homework Equations ac=4 pi2 r f2 The Attempt at a...

Homework Statement A point on the outer rim of a tire on a moving vehicle exhibits uniform circular motion with a frequency of 28 Hz. The diameter of the tire is 40 cm. How fast is the car moving? Answer in units of km/hr. Homework Equations V=2 pi r f The Attempt at a...

Yes, I got it right. Thank you so much, but I was wondering why do we add the distance traveled upward with the radius of the Earth ??

ughh, I feel really stupid, well I tried finding the radius in two different ways. The first one I found the angle of the orbit, which was 80, then used cos80 = r/1100km = 191.01 km. And the second time I found the hyponuse using pythagorean theorem. So the right radius is basically the radius...

Hi, so I got stuck on this problem and I really don't know what it is that I'm not doing right, so if you can please help me. Thank you Homework Statement A satellite is in a circular orbit 11000 km above the Earth’s surface; i.e., it moves on a circular path under the influence of...