Find the normal accelerations at A and B.Answers:At A, an=iNAt B, an=iN The cars of an amusement park ride have a speed va = 17 m/s at A and a speed vg = 10 m/s at B. If a 87-kg rider sits on a spring scale(which registers the normal force exerted on it), determine the scale readings as the car passes points A and B. Assume that theperson's arms and legs do not support appreciable force.UB47 mBVA24 mA

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Answered: Find the normal accelerations at A and…

International Edition---engineering Mechanics: Statics, 4th Edition

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ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

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Chapter7: Dry Friction

Section: Chapter Questions

Problem 7.79P: The coefficient of rolling resistance between the 30-kg lawn roller and the ground is r=0.1. (a)...

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It takes 34 s for the 60-Mg tugboat to increase its speed uniformly to 25 km/h, starting from rest. The propeller provides the propulsion force F which gives the tugboat forward motion, whereas the barge moves freely. The barge has a mass of 84 Mg . (A) Determine the force of the rope on the tugboat. Express your answer to three significant figures and include the appropriate units. (B) Also, determine F acting on the tugboat. Express your answer to three significant figures and include the appropriate units.
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The 10 kg block is subject to the action of a force that has the constant direction towards the spring, with a magnitude F= 250 (1 + x) N, where x is measured in meters. If the coefficient of kinetic friction between the block and the horizontal surface is 0.20, and ks= 50 N/m Use the springs por your calculations Determine: a) The work done by all the forces acting on the block during a movement from A to B. b) If the block starts from rest at point A, determine its velocity at point B using the equation of motion (Newton's 2nd Law). c) Verify the speed obtained in b) through the equation of work and Kinetic Energy. d) Explain the differences between the two methods used to find the velocity, from the point of view of the volume of calculations. Recomendations: 1. No force (except weight) is constant throughout travel 2. Acceleration is not constant at any point along the way. 3. When applying Newton's second law, it is advisable to do it in two sections. 4. Review the…
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