COLLEGE PHYSICS
2nd Edition
ISBN: 9781464196393
Author: Freedman
Publisher: MAC HIGHER
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Chapter 5, Problem 26QAP
To determine
Tension T1in the shorter string compared to the tension T2in the longer one
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A 0.25-kg ball is attached to the end of a 0.50-m string and moved in a horizontal circle at 2 m/s.
(a) What net force is needed to keep the ball in its circular path?
(b) Supposed you make the string half as long (0.25 m), what force is now needed?
E8. A Ferris wheel at a carnival has a radius of 10 m and turns so that the speed of the riders is 8 m/s.
a. What is the magnitude of the centripetal acceleration of the riders?b. What is the magnitude of the net force required to produce this centripetal acceleration for a rider with a mass of 60 kg?
39. A ball of mass 5.0 kg is attached to the end of a 2.2 m long string and whirled around in a circle thatdescribes a vertical plane.
(a) What is the minimum speed that the ball can be moving at and still maintain a circular path? Provide afree-body diagram.(b) At this speed, what is the maximum tension in the string? Provide another free-body diagram.(c) If the ball is rotated in a horizontal circle at the same speed with the end of the string held above the head,what angle does the string make with the horizontal?
Chapter 5 Solutions
COLLEGE PHYSICS
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- A 0.275-kg object is swung in a vertical circular path on a string 0.850 m long as in Figure P7.70. (a) What are the forces acting on the ball at any point along this path? (b) Draw free-body diagrams for the ball when it is at the bottom of the circle and when it is at the top. (c) If its speed is 5.20 m/s at the top of the circle, what is the tension in the string there? (d) If the string breaks when its tension exceeds 22.5 N, what is the maximum speed the object can have at the bottom before the string breaks? Figure P7.70arrow_forwardA roller coaster travels in a circular path, (a) Identify the forces on a passenger at the top of the circular loop that cause centripetal acceleration. Show the direction of all forces in a sketch, (b) Identify the forces on the passenger at the bottom of the loop that produce centripetal acceleration. Show these in a sketch, (c) Based on your answers to parts (a) and (b), at what point, top or bottom, should the seat exert the greatest force on the passenger? (d) Assume the speed of the roller coaster is 4.00 m/s at the top of the loop of radius 8.00 m. Find the force exerted by the seat on a 70.0-kg passenger at the top of the loop. Then, assume the speed remains the same at the bottom of the loop and find the force exerted by the seat on the passenger at this point. Are your answers consistent with your choice of answers for parts (a) and (b)?arrow_forward(a) What is the resultant force exerted by the two cables supporting the traffic light in Figure P4.75? (b) What is the weight of the light? Figure P4.75arrow_forward
- Two blocks of mass m1= 2 kg and m2 = 3 kg are connected by a rope that goes over a frictionless pulley and provides a tension T. m1 is accelerating downwards with an acceleration ? and m2 is accelerating down an inclined plane with an acceleration a. m2 is on an inclined plane with angle 30∘.a) What is a, the acceleration of the system? b) What is T, the tension on the rope connecting m1 and m2?arrow_forward85. In the ideal device of the figure, m1= 3.0kg and m2= 2.5kg. a) What acceleration do the masses have? b) What is the tension in the string?arrow_forward1. A 400 kg rocket sled can be accelerated at a constant rate from rest to 1200 km/h in 2.6 s. What is the magnitude of the required net force? 2. During an Olympic bobsled run, the Jamaican team makes a turn of radius 9.10 m at a speed of 93.3 km/h. What is the ratio of their acceleration to g?arrow_forward
- A 30 kg child sits on a Ferris Wheel that has a diameter of 20 m. The wheel rotates 3.2 times per minute. a) What force does the seat exert on the child at the top of the ride? b) What force does the seat exert on the child at the bottom of the ride?arrow_forward1. (a) If v1 = 20m/s [E10N] , than -v1 = 10m/s [W20S]? True or False (b)Your displacement will always be less than your distance traveled. True or False (c)The force of tension acting on a ball that is undergoing uniform circular motion is constant. True or False (d)Assuming all other "things" are constant, increasing the angle of a banked curve allows you to safely take that curve at a greater speed. True or Falsearrow_forwardA rock mass m=0.71 kgIs attached to a massless string of length l= 0.52 m. The rock is swung in a vertical circle faster and faster up to speed of v=2.7 m/s, at which time the string breaks. This occurs when the string is horizontal as shown in the figure. (A) what is the magnitude of the tension, in Newton’s , at which the string breaks?(B) how high, in meters, does the rock travel? Use a value of h=0 at the location of the breaks. arrow_forward
- On a single, light, vertical cable that does not stretch, a crane is lifting a 1 207-kg Ferrari and, below it, a 1 461 -kg BMW Z8. The Ferrari is moving upward with speed 3.50 m/s and acceleration 1.25 m/s2, (a) How do the velocity and acceleration of the BMW compare with those of the Ferrari? (b) Find the tension in the cable between the BMW and the Ferrari, (c) Find the tension in the cable above the Ferrari.arrow_forward(a) A cat with a mass of 850 kg in moving to the right with a constant speed of 1.44 m/s. What is the total force on the cat ? (b) What is the total force on the cat if it is moving to the left?arrow_forwardWhen Julia Child would cook an omelet, she would rapidly jostle the pan back and forth (Fig. P5.4). The egg would slosh back and forth in the pan as it cooked. Use Newtons laws to explain the eggs motion. FIGURE P5.4arrow_forward
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