A 4. A car is driving around a bend in the road. The bend follows a circular path with a radius of rand the surface of the road is horizontal. The car is travelling at a steady speed v. If the cartravelled any faster, it would skid outwards. Using the information, write an expression forthe coefficient of static friction between the car tires and the road.A) ZerorgB)v2C) Cannot be determined without the mass of the carD)rgv2E)rg

In this scenario, there are two forces acting on the car. The outward centrifugal force and the…

Answered: A car is driving around a bend in the…

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)...

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You push a box along the floor against a constant force of friction. When you push with a horizontal force of 76 N , the acceleration of the box is 0.52 m/s^2 ;when you increase the force to 80 N , the acceleration is 0.73 m/s^2m a) Find the mass of the box. Express your answer using two significant figures b)Find the coefficient of kinetic friction between the box and the floor. Express your answer using two significant figures.
Q2) The static friction coefficient between the box stationary on the inclined surface and the surface is µg. If you know the mass of the box is 25 kg, and us = 0.35, what force T is required to start the box sliding up the surface? Then discuss your results. 60° 40° Fig. Q2.
Q.2) B 25° Figure 1 In the figure above, blocks A and B have 50 and 10 kg respectively. It is given that the coefficients of friction between all surfaces of contact are µk = 0.3 and µ, = 0.4. a) If P=0, determine the acceleration of B and the tension in the chord? b) If P=10, determine the acceleration of B and the tension in the chord? c) If P=100, determine the acceleration of B and the tension in the chord?
4G I. A:E0 Question 6 Not yet answered Marked out of 1.00 P Flag question A 100 kg crate is being pushed on a horizontal floor at constant velocity. Given that the coefficient of kinetic friction between crate and floor is uk = 0.2, what is the frictional force? Select one: a. 196N b. 250N c. 500N d. 980N moodle.asu.edu.om غیر آمن II
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mg m2g Example: In the figure below, two forces, pull a 50.0 kg crate. The magnitude of F is 215 N and it is applied at an angle 0 = 42.0°. The magnitude of F2 is 55.0 N. If the crate is accelerating to the right at a rate of 0.500 m/s2, find the friction between the crate and thé floor. Fiy= Fi sin42 = 215 sin 42 0 = 42° Fix F cos42 = 215 COs 42 W =mg
A person stands on a scale in an elevator. As the elevator starts, the scale has a constant reading of 600 N. As the elevator later stops, the scale reading is 390 N. Assume the magnitude of the acceleration is the same during starting and stopping. (a) Determine the weight of the person. N (b) Determine the person's mass. kg (c) Determine the magnitude of acceleration of the elevator. m/s²
Q5
7) Hayley Davidson is riding her motorbike south along a flat, horizontal road. The total weight of Havley her hog is 1800 N. The engine exerts a 600 N force forward. The air resistance acting on Hayley and the bike is 200 N. The total friction between the tires and the road is 100 N. a) Draw a FBD diagram for the system that includes Hayley and her motorbike. b) Calculate the net force on the system. (ANS: b) 300 N)
1. A racing bicycle with rider has a combined mass of 85 kg. The racer is on a velodrome (circular racing track) that has banked curves. The surface is banked at an angle of 35° from horizontal. The track has a radius of 60 m. a) Draw a free-body diagram of the racer viewing the racecar from the front (left) and from above (right.) Ignore friction. Indicate the direction of the acceleration of the racer next to your diagram. b) Based on your free-body diagram do you think the car could possibly stay on a circular path (the track) without friction? Explain. c) Which of the forces you drew has a component in the same direction as the acceleration? Explain. d) Write down your force equations and solve for the acceleration of the racer moving at a constant speed around the track with no friction. (Hint: Use the direction of the acceleration as one of your axes. Do not use along-the-incline and perpendicular-to- the-incline as your axes.) e) What speed would the racer have with this…
A 30-kg box is being pushed along a horizontal surface. The coefficient of static friction between the box and the ground is 0.45, and the coefficient of kinetic friction is 0.35. What horizontal force must be exerted on the box for it to accelerate at 1.2 m/s2? A) 140 N B) 100 N C) 170N D) 36N E) 67N
Multiple part question: A worker in a factory slides a heavy box up a ramp into a truck. The box has a mass of 84 kg, and the ramp is 3 m long and makes an angle of 34° with the horizontal. The coefficient of friction between the box and ramp is 0.6. What is the weight of the box? What is the normal force acting on the box? What is the force of friction acting on the box? Assuming the worker pushes the box up the ramp with a constant velocity, how much work does the factory worker do on the box in order to get it into the truck? How much gravitational potential energy does the box have once it reaches the top of the ramp?

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