Q.2. A block of mass m = 0.5 kg is pushed against a horizontal spring of spring constant k = 450 N/m and negligible mass. The spring is compressed a distance x from equilibrium, and then released from rest. The block travels along a frictionless horizontal surface and reaches point B with a speed vg = 12 m/s. After reaching %3D B, at the bottom of a vertical circular track of radius R 1 m, the block continues to move up the track. Take g = 10 m/s². The normal force exerted by the track %3D on the block at B is: a. N = 103 N b. N = 77 N c. N = 133 N %3D B d. N = 67 N

Q.2. A block of mass m = 0.5 kg is pushed against a horizontal spring of spring constant k = 450 N/m and negligible mass. The spring is compressed a distance x from equilibrium, and then released from rest. The block travels along a frictionless horizontal surface and reaches point B with a speed vg = 12 m/s. After reaching %3D B, at the bottom of a vertical circular track of radius R 1 m, the block continues to move up the track. Take g = 10 m/s². The normal force exerted by the track %3D on the block at B is: a. N = 103 N b. N = 77 N c. N = 133 N %3D B d. N = 67 N

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)...

See similar textbooks

Similar questions

A box (of negligible size) slides down a smooth parabolic ramp. A stretchy cord (which acts like a spring) is attached to the box. The cord has a spring constant of k = 100 N/m and a natural length of Ln = 1.8 m. Initially, the box starts at rest at point A. The initial coordinates of the box are given by (1.5, 2.25) m. At point B, the position is given by the coordinates (2, 1) m. The box has a mass of 7 kg. Based off this information, answer the following questions: i) What is the speed of the box at location B? ii) What is the velocity of the box at location B? iii) What is the normal force from the ramp acting on the box at location B?
A toy cannon uses a spring to project a 5.33-g soft rubber ball. The spring is originally compressed by 4.99 cm and has a force constant of 8.08 N/m. When the cannon is fired, the ball moves 15.3 cm through the horizontal barrel of the cannon, and the barrel exerts a constant friction force of 0.031 O N on the ball. (a) With what speed does the projectile leave the barrel of the cannon? m/s () At what point does the ball have maximum speed? cm (from its original position) (c) What is this maximum speed? m/s
As shown in the figure, a 0.490kg object is pushed against a horizontal spring of negligible mass until the spring is compressed a distance x. The force constant of the spring is 450 N/m. When it is released, the object travels along a frictionless, horizontal surface to point A, the bottom of a vertical circular track of radius R = 1.00 m, and continues to move up the track. The speed of the object at the bottom of the track is va = 12.8 m/s and the object experiences an average frictional force of 7.00 N while sliding up the track. (a) What is x? (b) If the object were to reach the top of the track, what would be it’s speed at that point? (c) Does the object actually reach the top of the track, or does it fall off before reaching the top?
A 2.0 kg mass is moving along the x-axis. The potential energy curve as a function of position is shown in the figure. The kinetic energy of the object at the origin is 12 J. The system is conservative, and there is no friction. What will be the speed of the object at 6.0 m along the +x-axis? 30 29 P.E. 20 (J) 15 10 + Position 2.0 4.0 6.0 8.0 10.0 (m) 1.2 m/s O 1.4 m/s 1.8 m/s 2 m/s 2.2 m/s
Help me please
7.42 A2.00-kg block is pushed against a spring with negligible mass and force constant k = 400 N/m, compressing it 0.220 m. When the block is released, it moves along a frictionless, hori- zontal surface and then up a frictionless incline with slope 37.0° (Fig. P7.42). (a) What is the speed of the block as it slides along the horizontal surface after having left the spring? (b) How far does the block travel up the incline before starting to slide back down? Figure P7.42 k = 400 N/m wwwwwwwww |-0.220 m m = 2.00 kg 37.0°
(a) Part (a) refers to the figure below. A block of mass m = 0.1 kg is going down and inclined plane with an initial speed v₁. The inclined plane makes an angle = 30° with the horizontal and the inclined plane has a kinetic friction coefficient k 0.7. After travelling a distance L = 0.8 m, the block encounters a spring with a spring constant k 20 N/m. The block comes to rest after compressing the spring an amount x = 0.3 m. What is vi, the initial speed of the block? = x = 0 oooo 0 Initial x=0 momo 0 x Initial μk 1 Vi m Mk Part a (b) Part (b) refers to the figure below. The block then goes up the inclined plane again. After the block travels a distance x, the block leaves the spring. The block continues to go up the inclined plane and the block comes to rest after it travels a distance d past the equilibrium position for the spring. What is the distance d? x=0 Part b t 0 x=0 Final 0000 Ө μk Final Mk
2. In the accompanying figure, a tiny cube is pushed and released at point A. It has an initial velocity of 7.23 m/s. The whole course is frictionless except that marked L which is 16.2 m and has a coefficient of kinetic friction of µk = 0.78. Heights hi = 6.00 m and h2 = 2.00 m. (a) What is the speed of the cube at point B? (Hint: you do NOT need its mass) (b) What is the speed of the cube at point C? (c) Does the cube make it to point D? If so, how fast is it going there? If not, what is its distance traveled through region L?
A mass of 10.0 kg is attached to a spring on a frictionless horizontal surface. The spring constant k = 504 Newtons/meters. The spring is stretched until the Potential Energy of the spring is 2.52 Joules. What is the displacement ( in meters) in the spring?
A block of mass 15.0 kg slides from rest down a frictionless 33.0° incline and is stopped by a strong spring with k = 4.00 ✕ 104 N/m. The block slides 3.00 m from the point of release to the point where it comes to rest against the spring. When the block comes to rest, how far has the spring been compressed?
A horizontal spring attached to a wall has a force constant of k = 830 N/m. A block of mass m = 1.40 kg is attached to the spring and rests on a frictionless, horizontal surface as in the figure below. wiwwwww. x= 0 x = x;/2 x= X; (a) The block is pulled to a position x; = 6.60 cm from equilibrium and released. Find the potential energy stored in the spring when the block is 6.60 cm from equilibrium. 2.91*10**- >X Your response differs significantly from the correct answer. Rework your solution from the beginning and check each step carefully. J (b) Find the speed of the block as it passes through the equilibrium position. 6.45 Your response differs from the correct answer by more than 100%. m/s (c) What is the speed of the block when it is at a position x/2 3.30 cm? 5.58 Your response differs from the correct answer by more than 100%. m/s
A box of mass 2.0 kg, traveling horizontally, hits an uncompressed spring with an initial velocity, Vo, and compresses the spring to a maximum distance of 0.05 meters (at the maximum distance the box stops). The value of the spring force constant is k= 50 N/m. There is no friction in the system. Use the work-energy theorem (chapter 6) to find the initial velocity, Vo, of the box.