A student uses two springs for the experiment. The force constant of the thin spring (k,) is 2.5 N/m, and the force constant of the thick spring (k,) is 4.5 N/m. These springs are connected in series. How much mass is needed to pull the springs to get a 40 cm extension? (In series connection, the formulas: 1. F and kea k2 ; and gravitational kea k1 AL acceleration g = 9.81 m/s?)
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- A student uses two springs for the experiment. The force constant of the thin spring (k,) is 2.5 N/m, and the force constant of the thick spring (k2) is 4.5 N/m. These springs are connected in series. How much mass is needed to pull the springs to get a 40 cm extension? (In series connection, the formulas: + and ke. = ; and gravitational 1 kea k, k2 AL. acceleration g = 9.81 m/s? ) A. 0.0387 B. 0.0125 C. 0.0712 D. 0.0824 E. 0.0097A student uses two springs for the experiment. The force constant of the thin spring (k,) is 2.5 N/m, and the force constant of the thick spring (k2) is 4.5 N/m. These springs are connected in series. How much mass is needed to pull the springs to get a 40 cm extension? 1 + k2 1 - and kog = : and gravitational F (In series connection, the formulas: kea AL acceleration g = 9.81 m/s2 ) A. 0.0387 В. 0.0125 C. 0.0712 D. 0.0824 Ε. 0.0097A student uses two springs for the experiment. The force constant of the thin spring (k1) is 2.2 N/m, and the force constant of the thick spring (k2) is 3.6 N/m. These springs are connected in parallel. How much mass is needed to pull the springs to get a 5 cm extension? (In parallel connection, the formulas:keg = k, + k, and keg = acceleration g = 9.81 m/s2) F ; and gravitational AL A. 0.2628 B. 0.2712 C. 0.2836 D. 0.2956 E. 0.342
- A student uses two springs for the experiment. The force constant of the thin spring (k,) is 2.2 N/m, and the force constant of the thick spring (k2) is 3.6 N/m. These springs are connected in parallel. How much mass is needed to pull the springs to get a 5 cm extension? (In parallel connection, the formulas:keg = k, + k, and keg = ; and gravitational acceleration g = 9.81 m/s2) AL A. 0.2628 B. 0.2712 C. 0.2836 D. 0.2956 E. 0.342A student uses two springs for the experiment. The force constant of the thin spring (k,) is 0.01 N/m, and the force constant of the thick spring (k2) is 0.25 N/m. These springs are connected in series. How much force is needed to pull the springs to get a 25 cm extension? (In series connection, the formulas: = F 1 and kea keg k1 k2 AL A. 0.0036 B. 0.028 C. 0.0024 D. 0.038 E. 0.0042A student uses two springs for the experiment. The force constant of the thin spring (k,) is 0.01 N/m, and the force constant of the thick spring (k2) is 0.25 N/m. These springs are connected in series. How much force is needed to pull the springs to get a 25 cm extension? (In series connection, the formulas: =+ and ke = keg k,' k2 AL A. 0.0036 B. 0.028 C. 0.0024 D. 0.038 E. 0.0042
- A student uses two springs for the experiment. The force constant of the thin spring (k,) is 0.01 N/m, and the force constant of the thick spring (k,) is 0.25 N/m. These springs are connected in series. How much force is needed to pull the springs to get a 25 cm extension? (In series connection, the formulas: 1 1 and kea kea k1 k2 AL A. 0.0036 B. 0.028 C. 0.0024 D. 0.038 E. 0.0042You push a box (mass 3 kg) so that its initial speed is 2.2 m/s. It slides across a rough floor (coefficient of kinetic friction 0.48). How far will it slide before it stops? Give your answer in m and report your answer to 2 decimal places.An inventive child named Nick wants to reach an apple in a tree without climbing the tree. Sitting in a chair connected to a rope that passes over a frictionless pulley (see figure below), Nick pulls on the loose enc of the rope with such a force that the spring scale reads 310 N. Nick's true weight is 310 N, and the chair weighs 160 N. Nick's feet are not touching the ground. Use g=9.8 m/s². (b) Find Nick's acceleration, using upward as positive. m/s² (c) Find the magnitude of the force Nick exerts on the chair. (d*) Instead Nick hands the rope with the scale to his friend Barney, who stands on the ground. Barney pulls on the rope so that the spring scale again reads 310 N. What is Nick's acceleration now, again using upward as positive.
- A student uses two springs for the experiment. The force constant of the thin spring (k,) is 2.5 N/m, and the force constant of the thick spring (k2) is 4.5 N/m. These springs are connected in series. How much mass is needed to pull the springs to get a 40 cm extension? (In series connection, the formulas: 1 F =+- and ke. = ; and gravitational kea k1 k2 AL acceleration g = 9.81 m/s² ) A. 0.0387 В. 0.0125 С. 0.0712 D. 0.0824 E. 0.0097A spring hangs down from a ceiling a distance of 7 cm. When a mass of 171 grams is attached, the spring length changes to 13 cm. Now if a person changes the length to 13 cm and then releases the mass, what is the acceleration after 7 sec?17. A few weeks ago in lab you were releasing gliders down a tilted frictionless air track. Assume the track surface is tilted by 18 degrees from the horizontal. The glider is released from rest at t=0, and passes through a gate, which is a distance d along the track from the starting position, 0.90 seconds later. What is d (to 2 sig.figs)? A) 1.6 m B) 4.0 m 日:18° 3.8 m D) 2.5 m E) 1.2 m 9 COS 18