physics (check my work pleas)

A 5.00kg ball is swung at the end of a 1.25 m chain with a w of 2.0s^-1. Find the balls
a)V (m/s)
b) KE 1/2mv^2
c) I, inertia
d) Ke with I
e) Fc--> centripetal force

Work
a) v=rw
v= (1.25m)(2.0s^-1)
v= 2.5 m/s
b) 1/2 mv^2
(.5)(5)(2.5)^2
c) I=mr^2
= (5)(1.25)^2
= 15.6
d0 =.5 Iw^2
=(.5)(7.81)(2.0)^2
= 15.6 J
e) Fc= (mv^2)/(r)
Fc= (5.0)(2.5)^2/ (1.25)
= 25N


correct.

  1. 👍 0
  2. 👎 0
  3. 👁 84
asked by susane

Respond to this Question

First Name

Your Response

Similar Questions

  1. Physics

    A ball with a mass of 0.25 kilogram is swung on the end of a rope that is 3.0 meters long. The ball travels with a linear velocity of 10.00 meters per second. What centripetal force is acting on the ball?

    asked by Chad on May 29, 2013
  2. Physics

    This has been bugging me, I am given the steps to the answer, yet when I try to redo it I cannot reach the same answer. It is probably some silly mistake that I don't seem to notice, can someone please point my error, Thank you!

    asked by nathan on December 11, 2018
  3. Physics

    A thing rod of length L and negligible mass, that can pivot about one end to rotate in a vertical circle. A heavy ball of mass 5.00kg is attached to the other end. The rod is pulled aside through an angle 30.0 degrees and

    asked by Andrea on December 9, 2010
  4. PHYSICS

    An athlete swings a ball, connected to the end of a chain, in a horizontal circle. The athlete is able to rotate the ball at the rate of 7.80 rev/s when the length of the chain is 0.600 m. When he increases the length to 0.900 m,

    asked by Blanca on January 21, 2012
  5. physics

    A ball of mass 0.750 kg is attached to the end of a 1.20m long cord that can withstand a maximum tension of 50.0 N. If swung in a vertical circle, what is the maximum velocity the ball can achieve before the string breaks?

    asked by R on March 23, 2013
  6. physics

    A ball of mass 1.04 kg at the end of a 0.52 m long string is swung in a vertical circle at the fastest constant speed the ball can have without the string breaking. If the string can only exert 33 N of force without breaking, a)

    asked by Anonymous on January 20, 2012
  7. Pshyics

    A meter stick has a mass of 0.12 kg and balances at its center. When a small chain is suspended from one end, the balance point moves 19.0 cm toward the end with the chain. Determine the mass of the chain.

    asked by David on September 21, 2014
  8. physics

    A ball of mass 3.0 kg is tied to the end of a 50-cm length of string. The ball and string are swung in a circle in a vertical plane at constant speed v, which is the minimum speed necessary to keep the string taut at all times.

    asked by mike richards on April 18, 2013
  9. physics

    a .65 kg ball is attached to the end of a string. it is swung in a vertical circle with a radius of .50 m. at the top of the circle its velocity is 2.8 m/s.

    asked by dave on December 15, 2011
  10. Physics

    A 3.8 kg ball is swung in a horizontal circle at the end of a 1.5 meter rope. If the tension in the rope is kept constant at 79 N, what is the period of rotation, T?

    asked by Chaz on April 4, 2008

More Similar Questions