11th grade pre ap physics
posted by asian .
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?

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 = ______
If you do not include the cos 10.5 factor, your answer will be about 2% off. 
This is the wrong answer, do not copy it

396 (approx)

396 N (approx)

A single electron is placed in an electric field where the intensity 103.5 N/c. What force does the electron experience?
Respond to this Question
Similar Questions

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? 
physics
An athlete whirls a 7.50kg hammer tied to the end of a 1.1m 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? 
physics
An athlete whirls in a 7.10kg 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? 
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? 
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? 
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? 
physics
An athlete whirls a 6.6 kg hammer tied to the end of a 1.2 m chain in a horizontal circle. The hammer moves at the rate of 0.432 rev/s. What is the centripetal acceleration of the hammer? 
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? 
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? 
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 the …