7. When a 0.38-kg block is suspended on a vertical spring, it causes it to stretch 3.30 cm. If the block is now pulled 8.50 cm below its equilibrium position and released, what is the speed of the block when it is 4.00 cm below the equilibrium position? m/s
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- A spring-powered dart gun is unstretched and has a spring constant 12.0 N/m. The spring is compressed by 8.00 cm and a 5.00 gram projectile is placed in the gun. The velocity of the projectile when it is shot from the gun is Multiple Choice 3.92 m/s. 2.54 m/s. 1.52 m/s. 4.24 m/s. 5.02 m/s.9108 EX 25,561 3 D 7. When a 0.38-kg block is suspended on a vertical spring, it causes it to stretch 3.30 cm. If the block is now pulled 8.50 cm below its equilibrium position and released, what is the speed of the block when it is 4.00 cm below the equilibrium position? 0.87 AFNERAL BIOLOOK C $ MAL 2 22 R F 888 F4 -INDOLO 96 5 T G 011 X 0.887 m/s 6 B tv MacBook Air Y H & 7 N U * 8 J MA DII M ( 9 K A DD FO O €116 ce-16 W F10 Show my other submissions P zoom X ep L ISOI by mi 04 M vauies or roe puffer 912 delete
- A 5.0 kg object is placed on top of a vertical spring. Eventually the object comes to rest 10 cm below its starting point. The mass is then pushed down until the spring is compressed by 30 cm in total. It is then released. a. What maximum height, above the uncompressed spring, does the mass reach? b. What is the speed of the object when it leaves the spring? c. What is the maximum speed that the object reaches? d. What is the maximum acceleration of the object? Answer in 2 significant digits (or 3)W 10. A 1.45-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 0.56. What is the minimum compression in the spring to prevent the block from slipping down? 3 E D 4 22 R F % 5 cm T G 6 tv MacBook Air Y Ⓒ H & 7 U www * 8 ci16.06.co J Dil ( 9 K O O 4 P vauies or ne puffer + { ISUIT by m 04 M (28. A 3.2-kg hlock is hanging stationary from the end of a vertical spring that is attached to the ceiling. The elastic potential energy of this spring- block system is 1.8 J. What is the elastic potential energy of the system when the 3.2-kg block is replaced by a 5.0-kg block?
- ! Q A Z 7. When a 0.36-kg block is suspended on a vertical spring, it causes it to stretch 3.10 cm. If the block is now pulled 7.70 cm below its equilibrium position and released, what is the speed of the block when it is 3.70 cm below the equilibrium position? @ 2 W S X H command # 3 E D m/s e с ܟ ܠ 4 R F % G Search or type URL 5 V T G 6 FEL4 ZE5 MacBook Pro B Y H & 7 N U J * 00 I M 9 K -0 O L command P > $11 . : ; x { option [ + = ? I FI1. A block of mass 3.0kg is pressed against a spring (k=3,100N/m) near the bottom of a board inclined at θ=28∘. When released, the block is projected up the incline and the spring expands by 14cm to its normal length. Using the law of conservation of energy, determine the maximum distance (d) traveled by the block up the incline. a. in the absence of friction. b. when the coefficient of kinetic friction between the block and the board is 0.20 2. A 14,000kg tractor traveling north at 21km/h turns west and travels at 26km/h. Calculate the change in the tractor's a. kinetic energy. b. linear momentum (magnitude and direction).9. A 55 g mass-is suspended from a vertical spring. What is the spring constant for this spring? T -x=0 Ax 5.8 cm 319 N/m a b. 9.3 N/m. c. 9.3x10' N/m d. 3.2 x 10 N/m
- 4. A0.35 kg branch falls from a tree onto a trampoline. If the branch was initially 2.6 m above the trampoline, and the trampoline compresses 0.14 m. calculate the spring constant of the trampoline. (ans: 96 X 10 Nm]2. A toy launcher uses a spring to project a 150. g block horizontally. The spring has a spring constant of 8.00 N/m and it is initially compressed by a distance of 25.0 cm from its equilibrium position. The coefficient of friction between the block and the surface of the launcher is 0.500. a) Determine the block's speed when it reaches the spring's equilibrium position. (The answer 0.940 m/s.) b) Determine the compression distance from equilibrium where the block reaches its greatest speed. c) Determine the greatest speed of the block.8. An object of mass 0.54 kg is attached to a horizontal spring, with spring constant 40.0 4.10 cm from the equilibrium position and released, what is its maximum speed? m/s ssf60 stele 50 ssf6”. SI If the object is stretched ssf60 ssf.com $ 09588 093