The hard disk drive in a computer spins at a rate of 12] x 111' rpm. If the disk has a radius of 3.26 cm, what is the tangential speed of the outer edge of the disk? a. 62.3 mfs c. 3.24 3: HF mfs b. 19.8 mfs d. 6.23 >r1[13 nits Two equal masses, P and Q. are travelling in circles of equal radius. If the period of the circular motion for P is one-half that for Q, which of the following is a true statement regarding the centripetal forces {F} acting on the masses? ,1 EA c 41 F _4 ' F _1 Q '2 F F h__1'=_1 a. _P=2 Fg 2 FQ 1 A winch on a crane has a diameter of 2411 cm. If the winch is being used to lift a bucket of concrete at a speed of l13161} mfs. what is the period of rotation of the winch? a. (1.2855 c. 11.2505 h. 1.51's d. 11.1255 lICZIn a ride at the IL'Ialgarjtr Stampede. the passengers sit facing inward in carriages that are 4.75 m from the centre. If the carriages revolve about the centre at a speed of 8.511 nits, what is the centripetal acceleration? a. 2.65 ms1 c. 11.2 n'ii'sI h. 3.51 ms1 d. 15.2mst In a cyclotron, ions travelling in a circle at a constant speed of 2.31.1 x llll'El mt's accelerate at a rate of 1.511 x 1D\" nit's2 . What is the radius of'the circular motion for these ions? a. 323m c. 2.50m b. 5.23m d. .153m Venus, with a mass of 4.3? x 102' kg, is held in orbit by the Sun's force of gravity. 1f the Venus orbits the Sun at a radius of 1.118 3-: ID\" mwith a period of 1.94 x [[17 s, what is the force of gravityr that the Sun exerts on Venus