A 2-kilogram block is attached horizontally to a spring on a frictionless surface, as shown above. The spring has a spring constant of 200 newtons per meter and negligible mass. The string is compressed 15 cm to the left. (A) Determine the speed of the block at the instant it goes through its equilibrium position.
(B)Determine the period of the block.
(C)Determine the frequency of the block.
(D) Where is the kinetic energy of the block at a maximum? Explain.

This problem has been solved! see the answera non-uniform fire escape ladder is 6.0m long whenextended to the icy alley below. it is held at the top by africtionless pivot, and there is neglibible frictional force fromthe icy surface at the bottom. the ladder weighs 250n, and it'scenter of gravity is 2.0m along the ladder from the bottom. amother and child of total weight 750n are on the ladder 1.5m fromthe pivot. the ladder makes an angle θ with the horizontal. find the magnitude and direction ofa) the force exerted by the icy alley on the ladderb) the force exerted by the ladder on the pivotc) do your answers in part a and b depend on the angle?

The velocity of car is 80.0 miles per hour. what is the velocity of car in meters per second? (1 km -0.621 miles) m/s

Gasoline comes from petroleum, which is made from ancient living things. petroleum, therefore, contains a type of energy. a. heat b. nuclear c. biological d. chemical potential