R14–4. The block has a mass of 0.5 kg and moves within the smooth vertical slot. If the block starts from rest when the attached spring is in the unstretched position at A, determine the constant vertical force F which must be applied to the cord so that the block attains a speed VB = 2.5 m/s when it reaches B; sg = 0.15 m. Neglect the mass of the cord and pulley. %3D -0.3 m- 0.3 m B• SB -k = 100 N/m

A 0.510 kg mass hung from a spring stretches it 0.220 m. II (a) (a) How much (in m) does it stretch two such identical springs if they are hung in parallel, as in (a) of the figure above? (c) How much (in m) does it stretch the two springs if they are hung in series, as in (b) of the figure above? (c) Calculate the effective force (in N/m) constant of a single replacement spring in each case. |N/m (left hand setup) |N/m (right hand setup)

A 0.200-m uniform bar has a mass of 0.676 kg and is released from rest in the vertical position, as the drawing indicates. The spring is initially unstrained and has a spring constant of k = 28.0 N/m. Find the tangential speed with which end A strikes the horizontal surface. Number i Units 0.100 m Pivot (friction less) 0.100 m 0.100 m

A 1.350 kg air-track glider is attached to each end of the track by two coil springs. It takes a horizontal force of 0.500 N to displace the glider to a new equilibrium position, x= 0.290 m. Find the effective spring constant of the system. 1.72 N/m You are correct. Your receipt no. is 160-6527 The glider is now released from rest at x= 0.290 m. Find the maximum x-acceleration of the glider. Previous Tries 1.130rad/s Submit Answer You have entered that answer before Incompatible units. No conversion found between "rad/s" and the required units. Tries 1/12 Previous Tries Find the x-coordinate of the glider at time t= 0.490T, where T is the period of the oscillation. -0.275m Calculate the angular velocity and the period, then the time at which you must find the position. Submit Answer Incorrect. Tries 1/12 Previous Tries Find the kinetic energy of the glider at x=0.00 m. 7.25x10-2 J You are correct. Your receipt no. is 160-1865 O Previous Tries Send Feedback Post Discussion

When a 4.60 kg object is placed on top of a vertical spring, the spring compresses a distance of 2.10 cm. What is the force constant of the spring? N/m Need Help? Read It