A block is initially moving to the right on a level, frictionless surface. A hand exerts aconstant horizontal force on the block that causes the block to slow down (stage 1), turnaround, then move in the opposite direction while speeding up (stage 2).1. Complete the table below. Draw arrows to indicate relevant directions, and take thepositive x-direction to the right.DisplacementForce by handWork doneDirectionSignDirectionSignSignStage 1Stage 2

Answered: A block is initially moving to the…

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter4: Forces In One Dimension

Section4.3: Newton's Third Law

Problem 35SSC

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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?
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.
Which one(s) of the following force diagrams depict an object moving to the right with constant speed? Write all possible answers (if any) in the blank: ________________. Explain your answer(s) to this question.
Two students need to change the position of a 150 kg piece of equipment inside a laboratory. The distance they need to drag the equipment is 10m. Knowing that the coefficient of kinetic friction between the equipment and the floor is 0.3. The figure below shows a top view, where the arrows represent the friction forces and the forces applied by the students. Given that θ=20° , that the forces A1(vector) and A2(vector) have the same magnitude and are symmetrical to the horizontal, and that the equipment was dragged at constant speed, calculate the work done by the friction force and the students in moving the equipment.
A mover pushes a large packing crate across the floor in a straight line at a constant speed. What is the type of friction acting on the crate? kinetic ✓ Correct. 1-Because the crate is in motion, the type of friction exhibited in this case is kinetic friction. If the mover is applying a horizontal force of 110 N, what is the magnitude (in N) of the friction force on the crate? ⨯ Think about Newton's second law. If the velocity is constant, what's the acceleration? What's the net force? From this, if the mover pushes with a force in one direction, what must be the magnitude of the kinetic friction force in the other direction? N A large safe sits on a concrete floor. You push the safe horizontally, but the crate does not move. What type of friction force acts on the safe? static ✓ Correct. 2-Because the safe is motionless, the type of friction exhibited in this case is static friction. If the horizontal force you apply to the stationary safe above is 130 N, what is the…
The diagram shows the forces acting on a lorry as it travels along a flat road. a. Two of the forces have effects that cancel eachother out. Which two? Explain your answer. b. What is the resultant force of the lorry? Give it's magnitude and direction c. What effect will this resultant force have on the speed at which the lorry is travelling?
. In Figure 1, we have added an inclined plane to our machine. Whenthe masses are let go, they begin to move. There is friction between theinclined plane and m1, the coefficient of which is µk.(a) Draw FBDs for each mass. Take the y-axis to be perpendicular to theplane, and the x-axis parallel to it.(b) Sum the forces in the x- and y-directions.(c) Solve the equations from part (b) for the acceleration.(d) Take your result for the acceleration from part (c) and substituteα = 90◦(we will assume that neither mass contacts the inclined planehere). What equation for the acceleration a do you obtain? How is thisrelated to the standard Atwood Machine we discussed in class?
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Problem 2 Cart and Pulley Apparatus Newton’s 2nd Law may be applied to a simple system consisting of a frictionless horizontal track on which a cart plus some masses on it (total mass M), that is connected by a massless string over a frictionless pulley to a mass, m, (hanger plus some mass attached) In lab, in Activity 1, you will use a cart and track apparatus, like in the figure at right, and a hanging mass (hanger plus mass) that pulls the cart.You are to derive an equation for the acceleration of the cart. In lab, you will use this equipment setup to experimentally verify your answer. In the following steps, use the following notation: M = total mass of cart (including contents) m = mass of weight hanger T = tension force in the string a = acceleration Applying Newton's 2nd Law to the Cart – Pulley Apparatus 1. Complete the free-body diagram for the hanging mass (small weight hanger) for the case when it is accelerating (dropping). 2. Complete the free-body diagram…
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…

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