A rotating carousel has a boy sitting on a horse near the outer edge and a sitti

Question

A rotating carousel has a boy sitting on a horse near the outer edge and a sitting on a lion halfway out from the center. Which one of the following is true? a) Both children have the same angular speed, w. b) The boy has a larger angular speed than the girl. c) The boy has a smaller linear speed, v, than the girl. d) Both children have the same linear speed, v. A hiker, who weighs 900 N is strolling through the woods and crosses a small horizontal bridge, 8 meters long. The bridge is uniformly constructed, weigh: 4000 N, and rests on two concrete supports, one at each end. He stops 6.5 meter from the left end of the bridge. a) Draw a free-body diagram of the bridge showing all the forces acting in it. b) Find the magnitude of the total force applied at each of the concrete supports at the left and right ends to hold the bridge up. A spring is hanging vertically- You hang a mass of 0.4 kg on the tower end of the spring and it stretches 0.1 meters from its equilibrium position. a) Calculate the spring constant, k, of this spring. b) If you hang an additional 0.5 kg on the spring, what is the total stretch

Explanation / Answer

(1). Bothe childerns have the same angular speed,w.

Linear speed v = rw

Where r = distance from axis of rotation.

Distance of boy is greater than girl.

So, linear speed of boy is greater than girl.

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