Consider a rock in a slingshot that is being spun such that it undergoes uniform circular motion. (a) Draw a free body diagram for the rock (b) What force is providing the centripetal force for the rock?
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Consider a rock in a slingshot that is being spun such that it undergoes uniform circular
motion. (a) Draw a free body diagram for the rock (b) What force is providing the centripetal
force for the rock?
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- At amusement parks, there is a popular ride where the floor of a rotating cylindrical room falls away, leaving the backs of the riders "plastered" against the wall. Suppose the radius of the room is 3.75 m and the speed of the wall is 10.4 m/s when the floor falls away. The source of the centripetal force on the riders is the normal force provided by the wall. (a) How much centripetal force acts on a 62.2 kg rider? (b) What is the minimum coefficient of static friction that must exist between the rider's back and the wall, if the rider is to remain in place when the floor drops away?A car must take a flat circular exit of radius 35 m. Get the maximum speed the car can have without being swept away, (b) the angle at which I must incline the circular exit so that the car traveling at maximum speed I don't need friction to get around the curve. The mass of the car is 1500 Kg.t has been suggested that rotating cylinders about 16.0 mi long and 5.06 mi in diameter be placed in space and used as colonies. What angular speed must such a cylinder have so that the centripetal acceleration at its surface equals the free-fall acceleration on Earth?
- An athlete whirls a discuss in a circle of radius 80.0 cm. At a certain instant, the athlete is rotating at 10 rad/s and the angular speed is increasing at 50.0 rad/s². For this instant, find the tangential and centripetal components of the acceleration of the discuss and the magnitude of the acceleration. (89.4 m/s²)A truck with mass 215 slugs rounds a curve of radius 53.0 ft with speed of 62.5 ft/s. (a) What centripetal force is exerted on the truck while rounding the curve? (b) How does the centripetal force change when the velocity is doubled? (c) What is the new force?(a) A 19.0 kg child is riding a playground merry-go-round that is rotating at 50.0 rev/min. What centripetal force (in N) must she exert to stay on if she is 2.50 m from its center? (Enter a number.)N (b) What centripetal force (in N) does she need to stay on an amusement park merry-go-round that rotates at 3.00 rev/min if she is 5.00 m from its center? (Enter a number.)N (c) Compare each force with her weight. (For each answer, enter a number.) (force from (a))/(weight) = (force from (b))/(weight)=