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5.Figure 4 shows an 6kg block being pushed along the celling with a constant force of 220N acting at a 25° angle. The coefficient of/kinetic friction between the block and the ceiling is 35. No air resistance acts on the block in parts a, b, and c. a. Go to the figure and draw all relevant forces acting on the block. Also draw all "reaction" force that are paired with each force you drew on the block. B. What's the normal force on the block? C. What's the block's acceleration?

5.Figure 4 shows an 6kg block being pushed along the celling with a constant force of 220N acting at a 25° angle. The coefficient of/kinetic friction between the block and the ceiling is 35. No air resistance acts on the block in parts a, b, and c. a. Go to the figure and draw all relevant forces acting on the block. Also draw all "reaction" force that are paired with each force you drew on the block. B. What's the normal force on the block? C. What's the block's acceleration?

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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9. The 500KN is in contact with a 45° inline. The coefficient of static friction is 0.25. Compute the value of the horizontal force P necessary to Just start the block up the incline. A. 822KN B. 832KN C. 842KN D. 852KN
ANSWERS MUST BE IN 3 DECIMAL PLACES 1. A 400-N weight starts down the incline of 30o with the horizontal with an initial velocity of 4m/s. Find the velocity of the weight after 10s if fk = 0.2 for the incline. 2. A 400-N body starts up the incline of 30o with the horizontal (fk = 0.2) with a velocity of 3m/s. How long must a 500-N horizontal force act on the body to increase its velocity to 8m/s? 3. A 400-N body starts up the incline of 30o with the horizontal (fk = 0.2) with a velocity of 3m/s. How far will the body travel while the force is acting?
1. Steve pushes a box across a level floor with a constant horizontal force. This causes the box to move at a constant speed, v. The force from Steve: a. has the same magnitude as the weight of the box. b. equals the sum of the box's weight and the total frictional forces opposing the box's motion. c. has the same magnitude as the frictional forces opposing the box's motion. d. has greater magnitude than the frictional forces opposing the box's motion. e. has greater magnitude than the weight of the box. 2. Steve now doubles the force he applies to th box from the previous problem. Which of the following is true? a. The box will move at double the previous speed. b. The box will move with a continuously increasing speed. c. The box will increase speed for a while, then move at a constant speed. d. The box will continue to move at the same speed for a while, then continually increase speed. e. The box will move at a greater constant speed, but not necessarily double the speed.
You push a lawnmower (mass=15kg) across the lawn at constant speed. To do so, you must excert 200 N of force. The handle makes a 35° angle with the horizontal. A. Draw the force diagram B. What is the x-component of the force you apply? C. How does it compare to the frictional force which opposes your effort? Explain. D. If the frictional force is reduced to 100 N, determine the acceleration of the lawnmower.
A sled is on a horizontal surface and a rope with tension T is pulling on it at an angle 0 above the horizontal. The sled had mass M and does not move due to the frictional force. In this case the coefficient of friction is µ̟. In terms of the variables given and g, what is the magnitude of the frictional force in this case? Select one: a. H, Mgsino b. Tcose O c. Tsin0 O d. H, Mgcos0
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3 decimal place for final answer a. A body weighing 2,225N is being dragged along a rough horizontal plane by a pull of 445N directed at 18o from the horizontal. If fk = 1/12, find the velocity required from rest in the first 3.650m? b. A body weighing 2,225N is being dragged along a rough horizontal plane by a pull of 445N directed at 18o from the horizontal. If fk = 1/12, find the velocity required from rest in the first 5.500m?
7. Using two ropes, Eric and Arya pull Josh on a skateboard. There is an angle of 35° between Eric and Arya. Eric pulls with a force of 300N and the resultant force is 500N. Determine the angle the resultant force makes with Eric's force. Include a detailed diagram. a. b. With what force is Arya pulling the skateboard?
Figure 3 shows a 150 kg block on a ramp. If the force applied to the block initially at rest is 800 N and the coefficient of static friction is 0.20, determine the magnitude and direction of the friction force.
MCQ 4. The first of two identical boxes of mass m is sitting on level ground. The second box is sitting on a ramp that makes a 20° angle with the ground. The normal force of the level ground on the first box is NL; the normal force of the ramp on the second box is NR. Which statement is correct? a. NR= NL = mg. b. N₁ mg; NR= mg sin 20°. C. NL = mg; NR = mg cos 20°. d. Nr.= mg; NR= -mg cos 20°. e. NR=-NL = -mg.