5. Push the box and find the force needed to make the box to start moving. Add more mass (box, kid, man, refrigerator, basket as needed) and repeat the procedure such that you complete the table below. Hint: Weight = mass x gravity Magnitude of Normal Force = Magnitude of the Weight Mass (kg) Weight (N) Normal Force Force of Static (N) Friction (N) 50 90 130 150 180 6. Graph Normal Force vs. Force of Static Friction, plotting points and drawing the curve that better fit those points (show your work). A Force of Static

5. Push the box and find the force needed to make the box to start moving. Add more mass (box, kid, man, refrigerator, basket as needed) and repeat the procedure such that you complete the table below. Hint: Weight = mass x gravity Magnitude of Normal Force = Magnitude of the Weight Mass (kg) Weight (N) Normal Force Force of Static (N) Friction (N) 50 90 130 150 180 6. Graph Normal Force vs. Force of Static Friction, plotting points and drawing the curve that better fit those points (show your work). A Force of Static

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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Question 6 Given that a body with weight W is being pulled by a force P up an incline at an angle a to the horizontal. Write two equations for this system and deduce an expression for the frictional coefficient of the body with impending motion up the incline. Draw diagram of the motion and Label all the variables used. A. В. Figure 8 below shows a rope wrapped around a pulley to support a 800 kg mass. T1 800 kg Figure 8 Given that the coefficient of friction between the rope and the pulley is 0.3 , calculate: the weight of the 800 kg mass. ii. the tension T when the rope is wrapped 180 degrees around the pulley. i11. the angle in degrees that the rope must be wrapped for the mass to be supported by a tension of 500 N. i.
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Jacoo Is holding the handle of a wagon. Then he begins to pull the wagon. Which picture shows the forces on the wagon before the wagon begins to move? OA. Pull Friction B. Pull Friction Pull Friction OD. Pull Friction
2. A two body system is set up on an inclined surface with M = 5 kg and m = 4 kg. The angle is 25 degrees. And the static frictional coefficient is 0.25, and kinetic frictional coefficient is 0.20. i. Find the parallel and perpendicular components of the Mg. ii. Find the static frictional force and kinetic frictional force. iii. Determine which way the system will move, uphill or downhill. iv. Once it starts, find the tension T =? v. Once it starts, find the acceleration, a=?
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.…
question 4
sonia- m pject Pool partment... 7 1 1329 2 S X 7. A 7.50 kg block is pressed against a vertical wall by a force (F), as shown in the figure below. The coefficient of static friction between the block and the wall is 0.41 and the directional angle 8 for the force is 50.0°. Determine the magnitude of the force (F) when the block is about to slide down the wall. N 3 E D 80 F C $ 4 R F % 5 V T G (2991109 911 6 ccito coi16 MacBook Air 6: B S Y H & 7 S 63 91129 911539115 91109 91103 911931 92 U N 6 ceiloo cc 16 ecil6 ceiló ccrl6 cc 16. c 8 J ció ecil6 ceil D-Il ER 1 M ( 9 K MOSISO O O 4 19 P
30. An object is acted upon by an applied force F and a normal force N due to a surface with coefficients of static and kinetic friction µ, and µk, respectively. Which of the following statements is ALWAYS TRUE? A. The frictional force is opposite in direction to F. B. The static frictional force is equal to µ,N. C. The kinetic frictional force is proportional to N. D. The kinetic frictional force is greater than the static frictional force.
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