8. A 2lb ball bearing is pushed along a smooth horizontal track : r=1- cos(0) by a force F in the y-direction. The ball moves such that 0= constant = 0.5. %3D %3D Find the force F and track normal force when 0=30° = 6. %3D
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- A car with a mass of 1020 kg is traveling in a mountainous area with a constant speed of 64.9 km/h. The road is horizontal and flat at point A, horizontal and curved at points B and C. A B IC IB The radii of curvatures at B and C are: rg = 130 m and rc = 120 m. Calculate the normal force exerted by the road on the car at point A. Submit Answer Tries 0/12 Now calculate the normal force exerted by the road on the car at point B. Submit Answer Tries 0/12 And finally calculate the normal force exerted by the road on the car at point C.The 10-kg uniform horizontal rod is seen from the side. What is the gravitational torque about the point shown? Use g = 10 m/s2. -50 N·m -75 N·m 25 N·m -100 N·m -25 N·m 0 50 N·m 100 N·m 75 N·mThis time, V = 69.5 V; R1 = 107 Ohms; R2 = 72 Ohms; R3 = 56 Ohms; R4 81 Ohms; R5 = 185 Ohms; and R6 = 62 Ohms. How much current flows through = resistor R4? 0.072A 0.103A 0.217A 0.320A
- In this problem you have to draw the free body diagram. Please be sure, don't use chatgpt.The weights W1 and W2 in the figure are in rotational equilibrium. Which of the following statements cannor be true? O If W1 > W2. then L2 >L1. O If W1 > W2, then L1>L2. O If W23. A thin rod is free to rotate without friction about a fixed axis at Point A. The other end (Point B) is attached to a (massless) cable at an angle of 45° relative to the rod. a. Initially the rod is being held stationary in a horizontal position. What is the force, F, in the cable? What are the forces that the support is putting on the rod at Point A? Thin Rod m= 18 kg L=3m W₁ = 0 α1 = 0 Thin Rod m= 18 kg L=3m F₁ = ? a₂ = ? 45° b. The force, F, is suddenly changed to 200 N. What is the angular acceleration of the rod just after the force is changed? What are the forces that the support is putting on the rod at Point A now? = 200 N 45° B W₂ = 0 B9A mass in translational equilibrium experiences 3 forces. Select the case that most fully and accurately describes the scenario. I. The magnitudes of the 3 forces are equivalent. II. The angles between the 3 vectors are 120 degrees. III. The vector sum of the 3 forces equals 0N. IV. All 3 forces are parallel. A. III only B. I only C. I and III only D. IV only E. II and III onlyA 59.0-kg ice skater is moving at 4.07 m/s when she grabs the loose end of a rope, the opposite end of which is tied to a pole. She then moves in a circle of radius 0.810 m around the pole. red (a) Determine the magnitude of the force exerted by the horizontal rope on her arms. kN (b) Compare this force with her weight. Frope %3D W Need Help? Read Itquestion 1118. A car traveling on a flat (unbanked) circular track accelerates uniformly from rest with a tangential acceleration of 1.70-m/s. The car makes it one fourth of the way around the circle before it skids off the track. Determine the coefficient of static friction between the car and the track. Hint: you need to find the total acceleration of the car. Answer: 0.572To run Slap-chop and use Sham-wow you need to be in shape. For a work out, the man in the figure uses a device consisting of four springs arranged as shown. Each spring has a spring constant of 75.5 N/m. The hands holding the unstretched device are 36.34 cm apart. If the person can extend the springs to 61.87 cm apart, what is the maximum lateral force exerted by each hand?