23. Determine the value of the friction force. * Situation 4: The 50kg crate shown in the figure rests on a horizontal surface for which the coefficient of kinetic friction is µk = 0.2. The crate is subjected to a 500N towing force as shown. 500N 30°

23. Determine the value of the friction force. * Situation 4: The 50kg crate shown in the figure rests on a horizontal surface for which the coefficient of kinetic friction is µk = 0.2. The crate is subjected to a 500N towing force as shown. 500N 30°

Name: 23. Determine the value of thefriction force. *Situation 4: The 50kg
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Description: 23. Determine the value of thefriction force. *Situation 4: The 50kg crate shown in the figure rests on a horizontal surface for which the coefficientof kinetic friction is µk = 0.2. The crate is subjected to a 500N towing force as shown.500N30°740.

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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Right before a shoe starts sliding down an iclined ramp, θ reaches a maximum which means the force of gravity down the ramp is also at a maximum. This force is balanced by the static friction acting up the ramp. By reducing the angle of the ramp by a factor of 2 ?? does not change, yet the object remains stationary. As the angle of the ramp decreases, the normal force increases. Explain why the object remains stationary.
2.The 10kg crate is being pushed 5m along a floor by an 80.0-N force, applied at a 20.0 degree angle up from the horizontal. The u k between the floor and the crate is 0.100. The crate is initially moving at a speed of 5 m/s. - F=80N 20° 10 kg HA-0.1 a.) Draw a free body diagram for all the forces acting on the crate. CLEARLY label which of the forces do zero work on the crate b) Determine the change in Kinetic energy c) Determine the new speed obtained by the crate
A 24.0-kg box is released on a 27° incline and accelerates down the incline at 0.30 m/s² ▼ Part A Find the friction force impeding its motion. Express your answer to two significant figures and include the appropriate units. Ffr = 21 F Part B Submit Previous Answers Request Answer X Incorrect; Try Again μA Submit k = 17.5 m Determine the coefficient of kinetic friction. Express your answer using two significant figures. 15. ΑΣΦ ? Previous Answers Request Answer ?
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0 Select one: a. m 125. N Up the incline 125. N Down the incline OC24.9 N Down the incline 24.9 N Up the incline b. d. A mass is at rest on the incline plane (0 = 56.0°) as shown on the left. The mass is 6.17 kg. The coefficient of kinetic friction between the mass and the plane is 0.674 while the coefficient of static friction between the mass and the plane is 0.736. A rope is attached to the mass as shown and has a tension of 75.0 N. What is the magnitude and direction of the static friction force between the mass and the plane?
4. In the following figure, a box of m₂= 2.0 kg appears on an inclined plane with a coefficient of kinetic friction of 0.15 that makes an angle of 30 degrees. It is connected by a string of negligible mass to a box m₁= 0.5 kg lying on a horizontal friction surface with a coefficient of kinetic friction of 0.15. A force of 2.3 N to the right is applied to the box m₁. Determine: a. b. The acceleration of the boxes and the tension in the string. The value of the force applied so that the boxes move at a constant speed. 111 m₂
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25 N 10 N Figure 4 45° a. 31.50 N/m D. 21.21 N/m C. 55.28 N/m U. 28.10 N/m Situation 5 (Items 13-14). The 25-N block shown in Figure 4 is applied with a 10-N force. The coefficients of static friction at the surface of contact are 0.20 and 0.15 respectively. 13. How much is the normal force acting on the block? c. 24.75 N 14. Which of the following gives the friction force acting on the block? c. 9.90 N a. 9.90 N b. 10.61 N d. 25.48 N a. 3.71 N b. 4.95 N d. 10.61 N
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GOAL Apply the concept of static friction to an object resting on an incline. PROBLEM Suppose a block with a mass of 2.50 kg is resting on a ramp. If the coefficient of static friction between the block and ramp is ng sin e 0.350, what maximum angle can the ramp make with the horizontal mg cos e e before the block starts to slip down? STRATEGY This is an application of Newton's second law involving an object in equilibrium. Choose tilted coordinates, as in the figure. Use the fact that the block is just about to slip when the force of static friction takes its maximum value, f. = 4n. SOLUTION Write Newton's laws for a static system (1) EF = mg sin e - u̟n = 0 in component form. The gravity force (2) EF = n - mg cos e = 0 has two components. Rearrange Equation (2) to get an n = mg cos 8 expression for the normal force n. Substitute the expression for n into EF, = mg sin 8 - H mgcos 0 = 0 → tan 8 =u. Equation (1) and solve for tan 0. Apply the inverse tangent function to get the answer.…
A 20 N object is sitting on a flat surface. The coefficient of static friction is 0.4. The coefficient of kinetic friction is 0.2. What is the magnitude of the motive force? a) ON b) 4 N c) 196.2 N O d) 20 N e) 8 N
2. ) Two blocks of masses m, = m2 = 1.0 kg are at rest on the inclined plane as shown in the figure. Both blocks are made up of different materials such that the coefficient of 3.0 kg and m2 m1 static friction between the surfaces of block m, and incline plane is 0.7, while the coefficient of static friction between the surfaces of block m, and incline plane is 0.5. Answer the following questions. 30° a. Draw a free-body force diagram for the mass m (Remember: the free-body force diagram should be drawn without the body and on XY coordinate axes, where the positive X-axis is downward along the inclined plane)(Show all forces and level the name of the forces clearly) b. Write down Newton's second Law for mass m, along X-axis (Hint: Simply expand the summation in the equation EF, = m,a to include all forces. No calculation is required) С. Find the maximum possible static friction force on mass m.. d. Determine the magnitude of the interaction force between blocks m, and m2. (show all…