Find the spring constant, in N/m, of a spring that has 10.01 Joules of elastic potential energy when stretched by 0.47 m.

A 25.0-kg block is released from rest at point A. The track is frictionless except for the portion between points B and C, which has a length of 10.00 m. The block travels down the track, hits a spring of force constant 2000 N/m, and compresses the spring 0.50 m from its equilibrium position before coming to rest momentarily. Determine the coefficient of kinetic friction between the block and the rough surface between points B and C.

One end of a spring is attached to a fixed wall while a 0.36-kg block is attached to the other movable end. The spring is stretched 0.6-m horizontally, then released from rest. Calculate its speed when it goes back to equilibrium if the spring's force constant is k = 5 N/m.

A toy bow is used to fire an arrow directly upwards. The spring constant of the bowstring is 17 N/m, and the arrow has mass 0.013 kg. If the bow is drawn 0.15 m before firing, calculate the speed of the arrow when it leaves the bow.

A 0.220-kg block resting on a frictionless, horizontal surface is attached to a spring having force constant 83.8 N/m as in the figure below. A horizontal force F causes the spring to stretch at a distance of 5.49 cm from its equilibrium position.   (a) Find the value of F. (Enter the magnitude of the force only.) N(b) What is the total energy stored in the system when the spring is stretched? J(c) Find the magnitude of the acceleration of the block immediately after the applied force is removed. m/s2(d) Find the speed of the block when it first reaches the equilibrium position. m/s(e) If the surface is not frictionless but the block still reaches the equilibrium position, how would your answer to part (d) change? The block would arrive at a greater speed. The block would arrive at a lower speed.     The block would arrive at the same speed. (f) What other information would you need to know to find the actual answer to part (d) in this case?

A block of mass, 1.5 kg is attached and secured to an end of a spring with a spring constant of 10,000 N/cm. The other end of the spring is secured to the wall. The block is pushed against the spring, which compresses the spring to a position of x = -0.04 cm. When uncompressed, the end of the spring that is attached to the block is at a position of x = 0.00 cm. The block/spring system is then released from rest, and the block travels along a rough horizontal track for the length of the spring. At 0.00 cm the surface changes. Can you help me calculate the block's velocity once it leaves the spring? Thank you.

A 1.90 kg block slides on a rough horizontal surface. The block hits a spring with a speed of 2.00 m/s and compresses it a distance of 11.0 cm before coming to rest. If the coefficient of kinetic friction between the block and the surface is 0.460, what is the force constant of the spring?

A 50.0 cm long spring with spring constant 224 N/m has a mass 1.4 kg attached to it, and it can oscillate on a horizontal table without any friction. The spring is pulled by a distance 7 cm from the resting position and released. What is the kinetic energy (in joules) of the mass at the instant when the length of the spring is 51 cm. Ans: 0.5376

One end of a spring is attached to a fixed wall while a 0.25-kg block is attached to the other movable end. The spring is stretched 0.7-m horizontally, then released from rest. Calculate its speed when it goes back to equilibrium if the spring's force constant is k = 5 N/m.