I am working on a Friction lab for my physics class, I will attach my data and graphs.My experimental coefficient of kinetic friction is 4.375, which gives me a minimum angle (theta) = 77 degrees, which is really far off (experimentally 9.5 degrees). Have I done something incorrectly? The data is from my instructor (through a video). Thank you. Part 4: Determining the Minimum Angle of Incline before Stopping.Q4. How is the minimum angle related to the coefficient of kinetic friction?tani! (4.375)%3DQ5. Theoretically, what is the minimum angle that you can drop the elevated plane to before theblock stops sliding?Q6. Test your prediction to find your experimental value. Video (6) At what angle does the blockstop sliding?.5Do a percent error analysis between your theoretical and experimental values.Part 5: Devised an experiment to determine the coefficient of kinetic frictionConnect a string to the block and suspend a mass over a pulley so that a block moves up the plane ata constant speed. Draw a free-body diagram and derive an equation for the coefficient of kineticfriction for this case in terms of the suspended mass, the mass of the block, and the angle of incline.(Assume a massless, frictionless pulley) Part 3: Determining the Coefficient of Kinetic Friction.Now you need to determine the coefficient of kinetic friction. This done by placing the block on thelevel plane and measuring the force that must be applied to the block to keep it moving at a constantvelocity. Again, the force is measured with a spring scale. After each measurement add mass to theblock in 100-gram increments. Take 5 force measurements for 5 different block weights. Recordyour measurements in Table B. Video (4)TABLE BMass (kg)Weight (N) = mg3.534 N5.494NTensional Force (N)660.39=860.29=,8602 kg|1060,0g=8.430 NNOの1%3DPlot Tension vs. Weight: Video (5)Tension(N)1.002.00Weight (N)100Determine the slope of the best-fit line.-4.375MKYou now know the coefficient of kinetic friction between the two surfaces.

Answered: Image /qna-images/answer/e39a3bab-8088-4a4a-8c4a-cbee02ab5d9d.jpg

Part 4: Determining the Minimum Angle of Incline before Stopping. Q4. How is the minimum angle related to the coefficient of kinetic friction? tan' (4.375)-emin Q5. Theoretically, what is the minimum angle that you can drop the elevated plane to before the block stops sliding? -77,12° Q6. Test your prediction to find your experimental value. Video (6) At what angle does the block stop sliding? 9.5°

Part 4: Determining the Minimum Angle of Incline before Stopping. Q4. How is the minimum angle related to the coefficient of kinetic friction? tan' (4.375)-emin Q5. Theoretically, what is the minimum angle that you can drop the elevated plane to before the block stops sliding? -77,12° Q6. Test your prediction to find your experimental value. Video (6) At what angle does the block stop sliding? 9.5°

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

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter7: Dry Friction

Section: Chapter Questions

Problem 7.73P: The normal pressure acting on the disk of the sander is given by p=(4/3)+(r2/6), where p is the...

See similar textbooks

Similar questions

The normal pressure acting on the disk of the sander is given by p=(4/3)+(r2/6), where p is the pressure in pounds per square inch (psi) and r represents the radial distance in inches. Determine the torque C required to operate the sander at constant speed if the kinetic coefficient of friction for the surface being sanded is 0.86.
The figure shows a steel bar being processed by a rolling mill. Given that P=80kN and r =0.016, determine the force F required to advance the bar at a constant speed.
Two identical chairs, each weighing 14 lb, are stacked as shown. The center of gravity of each chair is denoted by G. The coefficient of static friction is 0.2 at B (the contact point between the chairs) and 0.35 at A, C, and D. Determine the smallest force P that would cause sliding.
A wedge is used to prop up the 6000-lb block of marble. The wedge angle is =30, and the angle of static friction is s=12 between all contact surfaces. Determine the smallest force P that would prevent the wedge from sliding out.
Calculate the horizontal force P required to push the 85-lb lawn mower at constant speed. The center of gravity of the mower is at G, and the coefficients of rolling resistance are 0.12 for the front wheels and 0.18 for the rear wheels.
Determine the smallest horizontal force P that must be applied to block B to cause impending motion. The angles of static friction are 15 between the blocks and 30 between the blocks and the ground.
Problem 4. A.) If the uniform concrete block has a mass of 500 kg, determine the smallest horizontal force P needed to movethe wedge to the left. The coefficient of static friction between the wedge and the concrete and the wedge and the floor is 0.3. The coefficient of static friction between the concrete and floor is 0.5.ANSWER: P=1797.52; N=1.80kNB.)Refer to problem number 4. Calculate the followinga.) the angle of friction between the wedge and the concrete and the wedge and the floor.Answer: ?????? ??? ????????= ?????? ??? ?????= 16.7ob.) the coefficient of static friction between the concrete and floor.Answer: ????????? ??? ?????= 263.56o
An object weighing 400 N is held by a rope that passes over a horizontal drum. The coefficient of friction between the rope and the drum is 0.25. If the angle of contact is 150 degrees, determine the force that will raise the object.
A horizontal force is exerted on a 150 lb chair at rest. The coefficient of static friction between the chair and the floor is 0.55. Determine the maximum horizontal force that can be applied to the chair before it moves.
Find the tension in each cord and the acceleration of the blocks. The coefficient of friction for all contact surfaces is 0.15 and the pulleys are frictionless.
A)What force F is needed to get the 300kg block shown in the figure below to move to the right? (b) What is the frictional force developed between the two blocks in N? (c) What is the frictional force developed between the 300kg block and the ground surface in N? The coefficient of static friction for all surfaces is 0.3. The angle, theta=100 The force F = N The frictional force between the two blocks = The frictional force between the 300kg block and the ground=
body resting on a rough horizontal plane requires a pull of 300 N inclined at 40º to the horizontal plane just to move it. It is found that a push of 150 N inclined at 40o to the x-axis can also make the body to move. Determine the weight of the body and the coefficient of friction.