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College Physics
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During which segment(s), if any, does the graph provide evidence that there is a force being applied to the cart in the same direction as its motion?
![Speed versus Time
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60
II
40
1.6
2.0
Time (s)
10
Speed (emis](https://content.bartleby.com/qna-images/question/9f62c828-a3be-4a9e-bfeb-9c0130dd0f2c/4b1cd11f-2148-47a3-9cbc-63f21143d7b6/pamobi_thumbnail.png)
Transcribed Image Text:Speed versus Time
120
100
80
60
II
40
1.6
2.0
Time (s)
10
Speed (emis
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- A wooden box containing several objects slides down a ramp at a constant speed when the ramp is inclined at 18°. The total mass of the box and its contents is 6.3 kg. A second box of equal mass slides down a different ramp at a constant speed. The second ramp is inclined at 26°. Compare the coefficients of friction of the two ramps. Explain reasoning (I need help with which forces act in certain spaces and why)arrow_forwardA box is placed in the bed of a pick-up truck or similar flat-bed vehicle. What the maximum acceleration the truck can undergo for which the block does not slide on the flat vehicle bed? The coefficient of static friction is mu, the vehicle mass is massvehicle, and the box mass is mbox. Derive an expression for max vehicle acceleration in terms of mu, gravitational acceleration, mvehicle, and mbox. Note that your derived expression may not contain all of these terms.arrow_forwardThis problem pertains to the scenario depicted in the diagram below, where the masses of the blocks are mi = 9.50 kg and m2 = 7.50 kg , and the angle of the ramp is 0 = 27.5°. There is no friction between block 2 and the ramp, but there is friction between block 1 and the flat surface it rests on. When the system is set in motion, both blocks move to the right at a constant speed. What is the coefficient of kinetic friction between block 1 and the flat surface (uk)? Show all steps, including drawing free body diagrams and applying Newton's 2nd law to each block. Problem 4 %3D sliding at constant speed m1 sliding at m2 constant friction no speed friction here herearrow_forward
- Two objects with masses of 3.00 kg and 5.00 kg are connected by a light string that passes over a frictionless pulley, as in the figure below. (a) Draw a free-body diagram for each object. Determine (b) the tension in the string, (c) the acceleration of each object, and (d) the distance each object will move in the first second of motion if both objects start from rest.arrow_forwardThe diagram shows overhead views of four situations in which forces act on a block that slides on a frictionless ice surface. In which situations would it be possible for the block to move along the floor with a constant velocity? (Assume the magnitudes of the forces can be adjusted slightly). I do not understand this at all. I know gravitational force is downwards, and frictional force is opposing the pushing force, but how do I solve this?arrow_forwardThe following diagrams show different objects of equal mass acted on by one or more forces. In the following diagrams, each force vector labeled as F has the same magnitude. a) Which of the four objects shown has zero net force acting on it? b) Which object or objects have the greatest magnitude of force? (Select all that apply) c) What object or objects move with constant velocity? (Select all that apply) d) What object or objects move with variable speed? (Select all that apply)arrow_forward
- As shown in the figure, a woman is straining to lift a large crate, but without success because it is too heavy. We denote the forces on the crate as follows: P is the magnitude of the upward force being exerted on the crate by the person, C is the magnitude of the vertical contact force on the crate by the floor, and W is the weight of the crate. How are the magnitudes of these forces related while the person is trying unsuccessfully to lift the crate? OA P=C OB.P+C>W OCP+Carrow_forwardA block of mass m = 5.2 kg is pulled up a 0 = 24° incline as in the figure below with a force of magnitude F = 37 N. (a) Find the acceleration of the block if the incline is frictionless. (Give the magnitude of the acceleration.) m/s² (b) Find the acceleration of the block if the coefficient of kinetic friction between the block and incline is 0.12. (Give the magnitude of the acceleration) m/s²arrow_forward(a) What is the coefficient of kinetic friction between the crate and the floor? (Enter your answer to at least three decimal places.) (b) If the 250-N force is instead pulling the block at an angle of 20.0° above the horizontal, as shown in the figure b, what will be the acceleration of the crate? Assume that the coefficient of friction is the same as that found in part (a). m/s2arrow_forward
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