# 11th grade pre ap physics

An athlete whirls a 7.00 kg hammer tied to the end of a 1.1 m chain in a horizontal circle. The hammer makes one revolution in 0.9 s. What is the tension in the chain?

1. 👍 0
2. 👎 0
3. 👁 328
1. The speed of the hammer must be
V = 2 pi*1.1/0.9 = 7.68 m/s. The chain cannot not be quite horizontal, but tipped at an angle A (to support the weight) so that
M V^2/R = T cos A and
M g = T sin A
tan A = g R/V^2 = 0.183
which means that
A = 10.3 degrees
T = (M V^2/R)/cos10.3 = ______

1. 👍 0
2. 👎 0
posted by drwls
2. This is the wrong answer, do not copy it

1. 👍 0
2. 👎 0
posted by Corey
3. 396 (approx)

1. 👍 0
2. 👎 0
posted by vinay
4. 396 N (approx)

1. 👍 0
2. 👎 0
posted by vinay
5. A single electron is placed in an electric field where the intensity 103.5 N/c. What force does the electron experience?

1. 👍 0
2. 👎 0
posted by ShMuel

## Similar Questions

1. ### physics

An athlete whirls a 7.50-kg hammer tied to the end of a 1.1-m chain in a horizontal circle. The hammer moves at the rate of 1.3 rev/s.(a) What is the centripetal acceleration of the hammer?(b) What is the tension in the chain?

asked by Luricela on March 20, 2010
2. ### Physics

An athlete whirls a 7.40 kg hammer tied to the end of a 1.1 m chain in a horizontal circle. The hammer moves at the rate of 1.4 rev/s. What is the centripetal acceleration of the hammer? What is the tension in the chain?

asked by Karen on October 16, 2007
3. ### physics

An athlete whirls in a 7.10-kg hammer tied to the end of a 1.2 m chain in a horizontal circle, as shown in the figure below. The hammer makes one revolution in 1.0 s. (a) What is the centripetal acceleration of the hammer? (b)

asked by javane on November 26, 2010
4. ### Physics

An athlete whirls a 7.36 kg hammer tied to the end of a 1.5 m chain in a horizontal circle. The hammer moves at the rate of 1.07 rev/s. What is the centripetal acceleration of the hammer? Assume his arm length is included in the

asked by O'Brien on January 28, 2013
5. ### Physics

An athlete whirls a 7.36 kg hammer tied to the end of a 1.5 m chain in a horizontal circle. The hammer moves at the rate of 1.07 rev/s. What is the centripetal acceleration of the hammer? Assume his arm length is included in the

asked by Bret on January 28, 2013
6. ### Physics

An athlete whirls a 6.6 kg hammer tied to the end of a 1.2 m chain in a simple horizontal circle where you should ignore any vertical deviations. The hammer moves at the rate of 1.02 rev/s. What is the centripetal acceleration of

asked by Abby on January 7, 2016
7. ### physics

An athlete whirls a 7.54 kg hammer tied to the end of a 1.5 m chain in a horizontal circle. The hammer moves at the rate of 1.51 rev/s. What is the centripetal acceleration of the hammer? Assume his arm length is included in the

asked by Anonymous on November 29, 2012
8. ### physics

An athlete whirls a 7.54 kg hammer tied to the end of a 1.5 m chain in a horizontal circle. The hammer moves at the rate of 1.51 rev/s. What is the centripetal acceleration of the hammer? Assume his arm length is included in the

asked by Anonymous on November 29, 2012
9. ### physics

An athlete whirls a 7.54 kg hammer tied to the end of a 1.5 m chain in a horizontal circle. The hammer moves at the rate of 1.51 rev/s. What is the centripetal acceleration of the hammer? Assume his arm length is included in the

asked by Anonymous on November 29, 2012
10. ### physics

An athlete whirls a 7.54 kg hammer tied to the end of a 1.5 m chain in a horizontal circle. The hammer moves at the rate of 1.51 rev/s. What is the centripetal acceleration of the hammer? Assume his arm length is included in the

asked by Anonymous on November 29, 2012

More Similar Questions