A 0.208 kg toy can be whirled in a horizontal circle of 1.0 meter radius at a maximum of 3.0 rev/s before the string or cable breaks. What is the force needed to break the string?
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Q: At takeoff a commercial jet has a 70.0 m/s speed. Its tires have a diameter of 0.400 m. (a) At how…
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Q: A 720-kg race car can drive around an unbanked turn at a maximum speed of 47 m/s without slipping.…
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Q: A 720-kg race car can drive around an unbanked turn at a maximum speed of 46 m/s without slipping.…
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Q: An RC car drives around in a circle of radius 1.00 m. The coefficient of static friction between the…
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Q: A curve in a stretch of highway has radius 512 m. The road is unbanked. The coefficient of static…
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- A block is placed on a turntable 43 cm from the axis of rotation. The turntable very slowly speeds up to 35.5 RPM. What is the minimum coefficient of static friction between the block and the turntable surface that would prevent the block from sliding away under these conditions?A jet pilot takes his aircraft in a vertical loop. The mass of the pilot is 68.0 kg. the loop has radius 1680 m. If the speed of the aircraft at the bottom of the loop is 316 m/s, the apparent weight of the pilot at the bottom of the loop is? If the pilot to feels weightless at the top of the loop, the speed of the aircraft at the top of the loop is?A car enters a horizontal, curved roadbed of radius 50.0 m. The coefficient of slatic friction between the tires and the roadbed is 0.20. What is the maximum speed with which the car can safely negotiate the unbanked curve?
- A curve in a stretch of highway has radius 512 m. The road is unbanked. The coefficient of static friction between the tires and road is 0.700. What is the maximum safe speed that a car can travel around the curve without skidding?A car drives around a curve with radius 400 m at a speed of 32 m/s. The road is banked at 7.0 degree. The mass of the car is 1500 kg. What is the magnitude of the centripetal force in order to make this turn? I am given an answer of 3800N, but not quite sure how to get there. Thanks!A 50.0 kg child stands at the rim of a merry-go-round of radius 1.70 m, rotating with an angular speed of 2.95 rad/s. (a) What is the child's centripetal acceleration? m/s2(b) What is the minimum force between her feet and the floor of the carousel that is required to keep her in the circular path? N(c) What minimum coefficient of static friction is required?Is the answer you found reasonable? In other words, is she likely to stay on the merry-go-round?
- A small car with mass 0.600 kg travels at constant speed on the inside of a track that is a vertical circle with radius 5.00 m (Figure 1 Figure B V 5.00 m K 1 of 1 If the normal force exerted by the track on the car when it is at the top of the track (point B) is 6.00 N, what is the normal force on the car when it is at the bottom of the track (point A)? Express your answer with the appropriate units. F = Submit μÀ Value Provide Feedback 6 Request Answer d C Units Neview Constalls ? Next >You have a disk that is 105 kg, has a 0.297-m radius, and is turning at 71.15 rpm, and you press a steel axe against it with a radial force of 46.65 N. Assuming the kinetic coefficient of friction between steel and stone is 0.451. How many turns will the stone make before coming to rest?A small ball is attached to one end of light rope that has a length of 4.0 m. The other end of the rope is attached to the ceiling. The ball is held with the rope horizontal and released from rest. The ball moves in the motion of an arc of the circle. When the ball is at its lowest point, with the rope vertical, the tesion of the rope is 15.5 N. What is the mass of the ball?
- A road with a radius of 75.0 m is banked so that a car can navigate the curve at a speed of 16.8 m/s without any friction. When a car is going 36.8 m/s on this curve, what minimum coefficient of static friction is needed if the car is to navigate the curve without slipping?One end of a cord is fixed and a small 0.550-kg object is attached to the other end, where it swings in a section of a vertical circle of radius 1.50 m, as shown in the figure below. When ? = 17.0°, the speed of the object is 6.00 m/s. At this instant, find the total acceleration and degree below the cord.