A 355.0 g block is dropped onto a vertical spring with a spring constant k = 276.0 N/m. The block becomes attached to the spring, and the spring compresses 0.25 m before momentarily stopping. m

Question 20 A spring with a constant of 10 N/m extends 1.5 m when supporting a weight. A second spring with a constant of 10 N/m is added in series. What is the extension of the combined spring system? 3 m 1.33 m 13.33 m 0.75 m

app//view pag 4. In the diagram below, the two springs have the same spring constant of 250 N/m and an unstretched length of 2.5 m each. What force is applied horizontally (to the left) in order for the ring to be displaced a distance of 1.2 m from the wall as indicated? Question #4 1.2 m t---- 5.0 m (cont'd) SG6-5 020 final (82 of 101) p. 82

2. A simple pendulum is suspended from the ceiling by means of a string of length of 1.82 m, Assume that there is no friction or air resistance.Suppose you were to release the pendulum from rest, starting from an angle of 42.9 degrees to the vertical. What will be the speed of the pendulum at the instant it reaches an angle of 12.9 degrees above the vertical?     0.95 m/s     4.64 m/s     2.94 m/s     3.09 m/s

A vertical spring stretches by 0.15 m to its new equilibrium length when a 3.0 N weight is attached. What is the spring constant?

ull T-Mobile LTE 5:27 PM O 21% O Done 11 of 11 A spring 1.50 m long with force constant 460 N/m is hung from the ceiling of an elevator, and a block of mass 14.0 kg is attached to the bottom of the spring. (a) By how much is the spring stretched when the block is slowly lowered to its equilibrium point? (Enter the magnitude only.) (b) If the elevator subsequently accelerates upward at 1.68 m/s², what is the position of the block, taking the equilibrium position found in part (a) as y = 0 and upwards as the positive y-direction. (Indicate the direction with the sign of your answer.) m (c) If the elevator cable snaps during the acceleration, describe the subsequent motion of the block relative to the freely falling elevator. What is the amplitude of its motion? Additional Materials OeBook

the potential energy of a particle is given by U(x)= (9 J/m^4)x^4-(8 J/m^2)x^2.  At what value of x would the particle be in unstable equilibrium? A.) -2/3 m B.) sqrt of 8/9 m c.) 0 m d.) 2/3 m e.) sqrt of - 8/9 m

At an archery event, a woman draws the string of her bow horizontally back from 0 to 0.416 m with a force that increases steadily from 0 to 800 N. Assume the bowstring is a spring. What is the spring constant of the bowstring? O 980 N/m O 2,940 N/m O 1,410 N/m O 1,920 N/m O 2,230 N/m Comma nd

spring constant = 638 N/m.mass = 2.7 kgh = 2.9 mangle = 24 degrees.Note: Assume there is no friction.   How far does the spring compress in m when the mass stops?

Recitation A 2.35-kg uniform bar of length 1.30 m is held in a horizontal position by three vertical springs. The two lower springs are compressed and exert upward forces on the bar of magnitude Fl 6.80 N and F2 = 9.50 N, respectively. Find (a) the force F exerted by the top spring on the bar, and (b) the location x of the upper spring that will keep the bar in equilibrium.