Q2.1 Consider a ball of mass 72 g whirled with a constant speed of 3.4ms around in a (nearly) horizontal circle of radius 65 cm on the end of a thin piece of string, as shown. (a) Calculate the centripetal acceleration and force. V = 3.4ms 65 cm 72g thin string (b) Explain why the force provided by the string cannot act horizontally. (c) Explain a probable reason why the string breaks when the speed is increased to 5.0ms1.
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- Pls help ASAP.A fighter pilot, whose mass is 65 kg, completes a vertical loop of radius R=450m with a constant speed v=261 m/s. At the top of the loop, determine the ratio of the apparent weight of the pilot to his regular weight, .WA/W =? Express your answer in SI units with zero decimal places. Take g=9.8 m/s². RA rotating space station simulates artificial gravity by means of centripetal acceleration at the rim. The apparent weight of a 54.2-kg passenger at the rim is 444 N. If the station rotates once every 42.5 s, what is the distance from the center of the station to the rim? m Save for Later Submit Answer
- A 2000 kg car going at a steady speed of 18.0 m/s takes a curve with a 50.0 m radius. The road is level. 1. Draw an FBD. 2. Find the centripetal force of the car. 3. Find the frictional force of the car. 4. Find the weight of the car. 5. What is the minimum value that the coefficient of static friction between the tires and the road must have so that the car takes this curve without slipping?Review Example 5, which deals with the bobsled in Figure 5.5. Also review Conceptual Example 4. The mass of the sled and its two riders in Figure 5.5 is 312 kg. Find the magnitude of the centripetal force that acts on the sled during the turn with a radius of (a) 33.0 m and (b) 24.0 m. Qu Nur Blar Qu 34 m/s Nur Blan Qu Num Blan Que Num Blan Vie Que Num Blank Que Nume Blank (a) Number Que Nume Blank (b) Number r= 33 m -24 m Figure 5.5 Units Units O (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 >
- A jet pilot flies his aircraft in a vertical loop at a speed of 1200 km/h. Part A What is the minimum radius of the circle (in meters) such that the pilot experiences no more than 6.0 g of centripetal acceleration when at the bottom of the loop? Part B The pilot has a mass of 78 kg. What is his effective weight at the bottom of the loop? Part C The pilot has a mass of 78 kg. What is his effective weight at the top of the loop? (Assume the same speed.)A car of mass m=1.65*10^3 kg is traveling at a speed of v=35.9 m/s around a turn of radius r=96.7 m as shown in the figure below. a) What is the magnitude of the centripetal, or radial, acceleration of the car? b) What is the magnitude of the centripetal, or radial, the force on the car?help with physics hw
- A car rounds an unbanked curve of radius 65 m. If the coefficient of static friction between the road and car is 0.72, then answer the following questions. (a) What force provides the centripetal force? A. Weight of the car B. Normal force on the car from the road C. Force of static friction (b) What is the maximum speed at which the car can traverse the curve without slipping? Enter to 2 significant figures Vmax= 18.07 m/sThe passengers in a roller coaster feel 42 % heavier than their true weight as the car goes through a loop with a 30 m radius of curvature. What is the car's speed at the bottom of the loop? Use g = 10 N/kg. Hint: How heavy some one feels is another name for normal force. The problem therefore tells you the normal force. If you know weight and normal force, you can determine centripetal acceleration. You can substitute a value for mass if you wish.NASA uses a machine often called the "vomit comet" to mimic the effects of low gravity in space during astronaut training. The machine moves in circular arcs at a speed of v = 214 m/s. What is the radius the pilot must fly to create weightlessness as they go around the top of the circular arc? Give your answer in meters.