16. A 30-kg child rides on a circus Ferris wheel that takes her around a vertical circular path with a radius of 20 m every 22 s. What is the magnitude of the resultant force on the child at the highest point on this trajectory? a. 49 N b. 0.29 kN с. 0.34 kN d. 0.25 kN 0.76 kN e.

16. A 30-kg child rides on a circus Ferris wheel that takes her around a vertical circular path with a radius of 20 m every 22 s. What is the magnitude of the resultant force on the child at the highest point on this trajectory? a. 49 N b. 0.29 kN с. 0.34 kN d. 0.25 kN 0.76 kN e.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Similar questions

11. Two 16 kg bowling balls are sitting on the ball rack. Which of the following statements is true. a. There is no gravitational force between the two bowling balls. b. The balls will slowly accelerate toward one another until they are touching on the ball rack. c. The balls will slowly accelerate away from one another because the friction force is greater than the gravitational force. d. The balls do not move because the qravitational force is too small to cause movement. Ce 4. 7 %24
A 2.0 kg object swinging at the end of a 45 cm string is traveling 4 m/s. Find the centripetal force on the object. ( CF : 1m = 100 cm) a. 14.4 N b. 1.44 N c. 0.18 N d. 71.1 N
An object moving upward cannot be considered free-falling a.Sometimes true b.Always false c.Sometimes fals d.Always true What refers to the force perpendicular to the velocity of an object moving along a curved path?a.Centrifugal force b.Reverse-effective force c. Centripetal force d. Normal force A uniform bar of mass m is supported by a pivot at its top, about which the bar can swing like a pendulum. If a force F is applied perpendicularly to the lower end of the bar as in the diagram, how big must F be in order to hold the bar in equilibrium at an angle θ from the vertical? a.(mg/2) sin (θ)b.(mg/2) cos (θ)c.2mg cos (θ)d.mg sin (θ)e.2mg sin (θ)
An 800-kg car is driven at a speed of 30 km/h on the inside track of a loop with a radius of 6 m as shown in FIGURE Q8. Determine the reaction force applied by the track to the car at the lowest position. FIGURE Q8 Select one: O a. 9.3 kN O b. 17.1 kN O c. 1.4 kN O d. 112.2 kN
A force of 5 N makes an angle of 15° (counter-clockwise) with the +X axis. The X component of the force is N. O a. 4.83 N O b. 1.34 N O C. -6.70 N O d. 1.29 N
5. Two 20kg carts are attached to opposite ends of a cable. Each cart is on a different side of an incline as shown. Neglect the mass and friction of the cable and pulley. a. What is the acceleration of the carts? b. If the carts start at rest, and they do not run out of cable or incline, how far will they have traveled in 5 seconds? m₁ = 20 kg/ 12° 9 m₂ = 20 kg 20°
D5
A ball on a string moves around a complete circle, once a second, on a frictionless, horizontal table. The tension in the string is measured to be 6.0 N. What would the tension be if the ball went around in only half a second? A. 1.5 N B. 3.0 N C. 12 N D. 24 N
d. 69.90 m a. 6.12 m C. 18.36 m b. 12.24 m 20. What weight will a spring scale read for a mass of a 60 kg woman stand on it in an elevator that moves downward with an acceleration of 6.0 m/s ? a. 984 N b. 588 N C. 786 N d. 228 N 11. A wheel 7.0 m in radius accelerates uniformly from 120 rad/min to 360 rad/min in 2.9 s. What is the angular acceleration? a. 2.26 rad/s^2 b. 6.55 rad/s^2 c. 1.38 rad/s^2 d. 2.76 rad/s^2 12. A person pull a 35 kg block 50 m along over a rough, horizontal surface with Hk = 0.30 a constant force Fp = 150 N, which acts at a 30° above the horizontal floor. If the frictional force is 80 N, what is the total net work done? a. 1433 J b. 11295 J c. 1917 J d. 2495 J 13. A child bounces a 52 g superball on the sidewalk. The velocity of the superball is from 24 m/s downward to 15 m/s upward. If the time contact with the sidewalk is 1.25 ms, what is the magnitude of the average force exerted on the superball on the sidewalk? a. 1622.4 N b. 1398.4 N C. 1248 N d. 374.4 N…
An empty elevator car of a building has a mass of 1 metric ton. It has a counterweight with a mass of 1.2 metric tons. What force must the motor of the elevator pull on the counterweight to make the elevator car go down with an acceleration of 0.5 m/se/sec? a. 12000 N b. 3057 N c. 11171 N d. 10310 N
A 27kg rock is positioned 7.5m West of a 95kg person. a.Determine the gravitational force that the rock exerts on the person. b.Determine the gravitational fieldstrengthat the position halfwaybetween the rockand the person.
A crate (100 kg) is in an elevator traveling downwards and slowing down at 6 m/s. Find the normal force exerted on the %3D crate by the elevator. Assume g = 10 m/s2. A. 1600 N B. 400 N C. 1000 N D. 400 N E. 600 N