1. A chicken is running in a circular path with an angular speed of 1.52 rad/s.
ID: 1603574 • Letter: 1
Question
1. A chicken is running in a circular path with an angular speed of 1.52 rad/s. How long does it take the chicken to complete one revolution? A) 4.13 s B) 2.07 s C) 118 s D) 4.77 s E) 8.26 s 2. A 4.0 kg object is moving with speed 2.0 m/s. A 1.0 kg object is moving with speed 4.0 m/s. Both the objects encounter the same constant braking force, and are brought to rest. Which object travels greater distance before stopping? A) the 4.0 kg object B) the 1.0 kg object C) Both objects travel the same distance. If cannot be determined from the information given. 3. It requires 0.30 kJ of work to fully drive a stake into the ground. If the average resistive force on the stake by the ground is 828 N. how long is the stake? A crane lifts a 425 kg steel beam vertically upward a distance of 95 m. How much work does the crane do on the beam if the beam accelerates upward at 1.8 m/s^2? Neglect frictional forces.Explanation / Answer
1.
1 revolution =2pi rad/sec
time taken by the chicken to complete one revolution is
t=angular displacement/angular speed=2pi/1.52
t=4.13 s
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