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. Please use the interactive area below to draw the Free Body Diagram for the block of ice. * Add Force O Reset All 45 x

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. Please use the interactive area below to draw the Free Body Diagram for the block of ice. * Add Force O Reset All 45 x

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter5: Newton's Law Of Motion

Section: Chapter Questions

Problem 32P: Suppose two children push horizontally, but in exactly opposite directions, on a third child in a...

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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?
The contestant now pulls the block of ice with a rope over his shoulder at the same angle above the horizontal as shown below. Calculate the minimum force Fhe must exert to get the block moving. (b) What is its acceleration once it starts to move, if that force is maintained?
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.
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.)
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…
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 525 N block is on a rough, horizontal surface with an applied horizontal force as shown in Figure 1. (a) If a force of 295N is required to start the block in motion, what is the coefficient of static friction, us? (b) If force of 205 N is required to maintain the block at constant velocity, what is the coefficient of kinetic friction, uk?
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 0.707. What is the weight of the heaviest pallet of bricks that can be supported this way? (Hint: Start by drawing appropriate free-body diagrams.)
ASAP please!! Draw (and upload) a free-body-diagram for block B under the conditions described in question 4 (immediately before this question). The only object in this diagram should be block B, and only forces appropriate for a free-body-diagram of block B should appear. All force vectors must be labeled with letters and subscripts as defined for this class.
Suppose your car was mired deeply in the mud and youwanted to use the method illustrated to pull itout. (a) What force would you have to exert perpendicular tothe center of the rope to produce a force of 12,000 N on thecar if the angle is 2.00°? In this part, explicitly show how youfollow the steps in the Problem-Solving Strategy for Newton’slaws of motion. (b) Real ropes stretch under such forces.What force would be exerted on the car if the angle increasesto 7.00° and you still apply the force found in part (a) to itscenter?
First draw Free body diagram,then solve. (Strictly don't copy from othersites)