Assume: The length of the athletes arm is included in the length given for the chain below.
An athlete whirls an 8.41 kg hammer tied to the end of a 1.3 m chain in a horizontal circle. The hammer moves at the rate of 0.893 rev/sec.
What is the centripetal acceleration of the hammer? answer in units of m/s/s.
What is the tension in the chain? Answer in units of N.
2007-12-16 05:33:47 · 1 answers · asked by Anonymous in Science & Mathematics ➔ Physics
The force F required to hold a mass m in circular motion of radius r and angular velocity ω is
F = m r ω²
Your radius is 1.3 m, the mass is 8.41 kg, and the angular velocity is ( 2π ) ( .893 ) radians / second. Plug 'em in and solve for F, which is the tension in the chain. Divide that by the mass of the hammer to get the acceleration.
2007-12-16 05:41:01 · answer #1 · answered by jgoulden 7 · 0⤊ 0⤋