2 Figure 7-16a shows two horizontal forces that act on a blockthat is sliding to the right across a frictionless floor. Figure 7-16bshows three plots of the block's kinetic energy K versus time t.Which of the plots best corresponds to the following three situ-ations: (a) F = F2, (b) F; > F2, (c) F < F;?(a)(6)Figure 7-16 Question 2.

Case F1=F2: As the block is initially moving in the right direction, and if the equal and opposite…

Answered: 2 Figure 7-16a shows two horizontal…

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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A bead of mass m = 5.30 kg is released from point A and slides on the frictionless track as shown in the figure below. The height of A is ha = 5.10 m. %3D ha 3.20 m 2.00 m (a) Determine the bead's speed at pbints B and C. point m/s В 8.4 point C Your response is within 10% of the correct value. This may be due to roundoff error, or you could have a mistake in your calculation. Carry out all intermediate results to at least four- digit accuracy to minimize roundoff error. m/s (b) Determine the net work done by the force of gravity in moving the bead from A to C. 141.12 Your response differs from the correct answer by more than 10%. Double check your calculations. J
General Physics 1 Mod 5 no. 18
Potential Energy
A box is pressed against a horizontal spring, compressing the spring from its relaxed length. The box is then released and the spring launches the box horizontally along a track that ends in a ramp, as shown above. The box has enough speed to leave the ramp, and the box reaches a maximum vertical height above the floor. Assume there is negligible friction between the box and the track and air resistance is negligible. K = spring constant of spring X = distance the spring is compressed M = mass box Theta = angle of ramp from horizontal H = maximum height reached by box The scenario is repeated using a different box with a greater mass. The spring is compressed the same distance x. Indicate how h in this second scenario compares to h in the original scenario, and explain why without mathematically deriving a relation for h. Students derive an equation for h in the original scenario, h= (sin2theta)kx2/2Mg, which may or may not be correct. Is this equation consistent with your claim…
A crate of mass 9.8 kg is pulled up a rough incline with an initial speed of 1.54 m/s. The pulling force is 104 N parallel to the incline, which makes an angle of 20.5° with the horizontal. The coefficient of kinetic friction is 0.400, and the crate is pulled 4.94 m. (d) What is the change in kinetic energy of the crate?_ J(e) What is the speed of the crate after being pulled 4.94 m?_ m/s
A baby is free to move on a horizontal frictionless table and is attracted to the origin by a mysterious force with magnitude F(r) = ar+Br². (i) Find the potential energy function associated with the mysterious force. (ii) If the baby is released from rest at the location (r, 0) = (a, π/4), what will be his speed when he reaches the origin? Law Application a X
In the figure below, a block of ice slides down a frictionless ramp at angle 0 = 50° while an ice worker pulls on the block (via a rope) with a force Fr that has a magnitude of 45 N and is directed up the ramp. As the block slides through distance d = 0.31 m along the ramp, its kinetic energy increases by 60 J. How much greater would its kinetic energy have been if the rope had not been attached to the block? ---Select--- F. A
A block of mass m, initially at rest, slides downwards along an inclined plane of inclination α with the horizontal. Then it reaches a horizontal surface on which it slides for a further distance d until it stops. Determine the work performed by the frictional force throughout the movement, assuming that the friction coefficient µ is the same in both planes. Explain the entire procedure.
A 1000-kg automobile accelerates up a hill, increasing its speed from 5 mi/h to 50 mi/h, along a straight 100-m stretch of road. If the hill makes an angle of 5° with respect to the horizontal, find the total work done by the automobile.
Question 2 30° In the figured provided, a 67.0 kg boy compresses a spring by 0.400 m and slides down a frictionless slide. The slide leads into a 30° ramp that has a coefficient of kinetic friction of 0.220 with the boy. If the spring constant in the spring is 71200 N/m and the slide has a height of 47.0 m, what distance up the ramp will the boy get before stopping?
The graph shows the time dependence of the vertical displacement of a lead ball with marked initial and final states. Choose all the work-energy bar charts that can represent the process. Note that the y-axis can point either up or down K, + Ug + W = K, + U K, + U + W = K, + Ug K; + Ug + W = K; + U K + U + W = K, + U
$4

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