"A 5.2 kg stone is tied to a 4.7 m long string and swung around a circle at a constant angular velocity 7.6 1/s. Find the magnitude of the torque about the origin."
Torque is Inertia*angular acceleration, so 5.2kg*(4.7m)^2*7.6rad/s^2, it was 872.9968 but it's not correct. What did I make a mistake? Please explain to me. Thank you.
2007-07-29 20:31:10 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Physics
you wroteTorque is Inertia*angular acceleration and also swung around a circle at a constant angular velocity 7.6 1/s.
well as the body is moving with constant angular veloctiy the angular acceleration associated with it zero. hence the net torque is zero.
2007-07-30 00:12:17 · answer #1 · answered by ? 2 · 0⤊ 0⤋
Τ = Iα
With no angular acceleration there must be no torque.
2007-07-29 20:42:32 · answer #2 · answered by Helmut 7 · 0⤊ 0⤋