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- Kwame experimented with his spring scale and found that it took 3.5 N of force to move his spring scale 0.02 m. What is the spring constant of Kwame's spring scale? A 175 N. 0.07- 7.0 D. 3.48 B.16. If your experimental value is g = 9.65 m/s² and the theoretical value is g = 9. 80 m/s², what is your percent error (in %)? 17. Suppose you hang a 20-g mass from a spring and it stretches 2.3 cm. What is the spring constant (in N/m) of this spring? 18. What mass (in grams) would stretch the same spring 3.2 cm?11. A 1.30-kg block is pushed against a vertical wall by means of a spring (k = 850 N/m). The coefficient of static friction between the block and the wall is 0.52. What is the minimum compression in the spring to prevent the block from slipping down? cm - ww
- Table 2. Spring Force Constant Data deformation of the spring, x (m) force applied to the spring, F (N) 0.125 0.98 0.255 1.96 0.385 2.94 0.517 3.90 0.645 4.88 0.773 5.861. A spring gun (spring constant k=100 N/m) is used to shoot a 5 g ball vertically up. The ball leaves the gun with speed 10m/s. a) What was the compression of the spring? b) What is the maximum height of the ball above the release point?4.
- 1. Consider the setup shown below: a block with mass m; sits on a table with friction coefficient u between the table and itself, attached on one side to a spring with stiffness k, and on the other side to a cord with negligible mass that wraps over a frictionless pully and supports a second block with mass m2 that's suspended in the air over the edge of the table. The friction between block 1 and the table is not enough to hold up block 2 so that, when it's released from rest, the spring stretches a distance Ax before the system comes to rest. a. Draw and label a free-body diagram for each block. (Use the gridlines to make sure that the relative lengths of your vector arrows are correct.) k m1 block 1: block 2: m2 b. What is the kinetic friction coefficient between block 1 and the table?3. Before: mi vi After: m2 Ax (mm) I coul m₁+m2 a) Measurements on a spring reveal that a force of 0.75 N will compress the spring by 0.25 cm. Find the spring constant of this spring, k. b) This spring is now mounted horizontally with a block of wood attached to one end. A bullet with mass m₁=0.008 kg and velocity v, is fired horizontally into the block of wood. The wood block has mass m₂=0.992 kg and is initially at rest. The bullet embeds itself in the wood and the spring is compressed by 2 cm before it comes to rest momentarily. c) Find the velocity of the block/bullet combination directly after the collision needed to compress this spring by Ax=2 cm. d) Find the initial velocity of the bullet before the collision, V₁. Hint: Is the collision elastic or inelastic?7. A person weighing 730N is sitting in a swing. The swing is pulled sideways until the rope makes an angle of 35° with the vertical. What is the tension on the rope?
- 4. A spring with an equilibrium length of 50.0 cm is holding a 4.00kg mass. The mass causes the spring to stretch to a length of 1.00 meter. What is the potential energy given to the spring?2. An un-stretched spring has a length of 0.50 m and a spring constant of 100. N/m. What force is required to stretch this spring to a length of 0.60 m?10. A 75.0-kg circus performer jumps from a height 4.90 m onto a trampoline and it stretches 0.35 m. Assume that the trampoline obeys Hooke's Law. How far will it stretch if the performer jumps from a height 8.1 m? 36 36 skpi skp