You stand on the pedal of a bicycle. If you have a mass of (65 kg), the pedal makes an angle of (35°) above the horizontal, and the pedal is (18 cm) from the center of the chain ring, how much torque would you exert? τ = rFsin(θ) 114.8 N. m 6583.3 N. m 65.8 N. m 6.8 N. m

Suppose a wheel with a tire mounted on it is rotating at the constant rate of 2.15 times a second. a tack is stuck in the tire at a distance of 0.373 m from the rotation axis. noting that for every rotation the tack travels one circumference (a) find the tack's tangential speed. (b) what is the tacks radial acceleration?