Problem 14: Using a rope, a man pulls a block of ice across a frozen pond at a constant velocity, as shown in the figure. While they coefficients of static and kinetic friction for ice are low, they are not zero. Consider this problem to involve friction. If necessary, use Fs for the force of static friction, and Fk as the force of kinetic friction. F Jo Please use the interactive area below to draw the Free Body Diagram for the block of ice. 1 Add Force O Reset All Ftotal,x: Ftotal,y:

Problem 14: Using a rope, a man pulls a block of ice across a frozen pond at a constant velocity, as shown in the figure. While they coefficients of static and kinetic friction for ice are low, they are not zero. Consider this problem to involve friction. If necessary, use Fs for the force of static friction, and Fk as the force of kinetic friction. F Jo Please use the interactive area below to draw the Free Body Diagram for the block of ice. 1 Add Force O Reset All Ftotal,x: Ftotal,y:

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter6: Applications Of Newton’s Laws Of Motion

Section: Chapter Questions

Problem 9PQ: A man exerts a force of 16.7 N horizontally on a box so that it is at rest in contact with a wall as...

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Two boxes, A and B, are at rest Box A is on level ground, while box B rests on an inclined plane tilted at angle with the horizontal. (a) Write expressions for the normal force acting on each block (b) Compare the two forces; that is, tell which one is larger or whether they are equal in magnitude. (c) If the angle of incline is 10 , which force is greater?
Suppose two children push horizontally, but in exactly opposite directions, on a third child in a wagon. The first child exerts a force of 75.0 N, the second exerts a force of 90.0 N, friction is 12.0 N, and the mass of the third child plus wagon is 23.0 kg. (a) What is the system of interest if the acceleration of the child in the wagon is to be calculated? (See the free-body diagram.) (b) Calculate the acceleration. (c) What would the acceleration be if friction were 15.0 N?
A body of mass m has initial velocity v0 in the positive x -direction. It is acted on by a constant force F for time t until the velocity becomes zero; the force continues to act on the body until its velocity becomes v0 in the same amount of time. Write an expression for the total distance the body travels in terms of the variables Indicated.
A block of mass 3m is placed on a frictionless horizontal surface, and a second block of mass m is placed on top of the first block. The surfaces of the blocks are rough. A constant force of magnitude F is applied to the first block as in Figure P4.68. (a) Construct free-body diagrams for each block. (b) Identify the horizontal force that causes the block of mass m to accelerate. (c) Assume that the upper block does not slip on the lower block, and find the acceleration of each block in terms of m and F. Figure P4.68
A man exerts a force of 16.7 N horizontally on a box so that it is at rest in contact with a wall as in Figure 6.3. The box weighs 6.52 N. a. Find the static friction force exerted on the box, given the forces being applied, b. If the coefficient of static friction between the wall and the box is 0.50, find the maximum static friction force that may be exerted on the box. Comment on your results.
At a construction site, a pallet of bricks is to be suspended by attaching a rope to it and connecting the other end to a couple of heavy crates on the roof of a building, as shown in (Figure 1). The rope pulls horizontally on the lower crate, and the coefficient of static friction between the lower crate and the roof is 0.509. What is the weight of the heaviest pallet of bricks that can be supported this way? (Hint: Start by drawing appropriate free-body diagrams.) (Express your answer in pounds.) What is the friction force on the upper crate under the conditions given in Part 1? (Express your answer in pounds.)
An athlete is training his stamina by pulling a load of 125 kg box at 846 N through a rough surface by a rope at 35.9° above horizontal as shown in Figure 4. Given that the coefficient of kinetic friction between the load and the surface, uk = 0.546 (a) Draw a complete free body diagram of the box(b) Compute the frictional force between the load and the surface(c) Determine the acceleration of the load(d) Without adding additional load, propose a slight modification to the above setting to increase the toughness of the training. Justify your proposal.
A contestant in a winter sporting event pulls an m kg block of ice across a frozen lake by applying a force F at an angle θ above the horizontal as shown. Assume that the coefficient of static friction for ice on ice is 0.0300, and the coefficient of kinetic friction for the same is 0.0100. Let to the right be the positive x direction and up be the positive y direction for your equations. Please use the interactive area below to draw a free body diagram to represent the situation where the contestant is pulling, but the block has not yet started to move. Use Fs for the force of static friction and Fk for the force of kinetic friction if they are needed for your free body diagram. 17% Part (b) Select the correct expression for the net force in the horizontal direction, ΣFx. 17% Part (c) Select the correct expression for the net force in the vertical direction, ΣFy. 17% Part (d) Obtain a numeric value, in newtons, for the magnitude of the maximum applied force, F, consistent…
1.)The original figure and requirement(s) 2.)Free body diagram with a complete label, 3.) Formulas and their proper symbols 4.) Direction of forces and sign convention. The vertical and horizontal components must also be indicated on free body diagram.
A block with a mass of m = 22 kg rests on a frictionless surface and is subject to two forces acting on it. The first force is directed in the negative x-direction with a magnitude of F1. The second has a magnitude of F2 and acts on the body at an angle θ = 15° measured from horizontal, as shown. 1). Please draw the Free Body Diagram for this block, assuming it is in static equilibrium? 2)Write an expression for the component of net force, Fnet,x, in the x-direction, in terms of the variables given in the problem statement. 3)Write an expression for the magnitude of the normal force, FN, acting on the block, in terms of F2 and the other variables of the problem. Assume that the surface it rests on is rigid. 4). The two forces change such that F1 = 11 N and F2 = 19 N. Based on this change, the block may no longer be in static equilibrium. Find the block's acceleration in the x-direction, ax, in meters per second squared.
please help me explain why my the frictional force is static and also please draw all the forces acting on the box (free body diagram)
Problem 10: Shown to the right is a block of mass m = 11.3 kg sitting on a ramp that makes an angle θ = 26° with the horizontal. This block is being pushed by a horizontal force F = 223 N. The coefficient of kinetic friction between the two surfaces is μ = 0.43. Part (a) Write an equation for the acceleration of the block up the ramp using variables from the problem statement together with g for the acceleration due to gravity. art (b) Find the acceleration of the block up the ramp in m/s2.