A horizontal spring has spring constant k= 360 N/m. b) If a 1.85-kg block is placed against the spring on a table, as shown, and the spring is released what will be the speed of the block when it separates from the spring at x = 0? Ignore friction. :) Repeat part (b), but the block is moving on a table with coefficient of friction Hk = 0.38.

In the figure below the block has m = 3.0 kg and the spring has k = 350 N/m. If the block, initially at rest, is released from a height of 0.8 m, what is the maximum compression of the spring? Ignore friction.

A 2-kg block is attached to a spring (k = 600 N/m), where it bounces back and forth without friction. When the spring is compressed 0.1 m from equilibrium, the block has a speed of 2 m/s. What is the fastest speed the block achieves during the bouncing?   Answer in m/s. ​[Hint: If the block only has PE and KE, how much PE will it have when it is going as fast as possible?]

A crate of mass m1 slides down a well-lubricated hill of height h, with negligible friction. At the bottom, where it is moving horizontally, it collides with another crate, of mass m2, that initially was sitting at rest and that is attached to a wall by a spring of spring constant k that initially is at its equilibrium length. Assume that the spring itself has negligible mass. a)Given that the distance d that the crates compress the spring is d=0.35 m, calculate the speed v2 of the crates immediately after the collision, in units of meters per second. Use the following values:k=950 N/mm1=2.4 kgm2=2.6 kgμ=0.49g=9.8 m/s2  b)What was the speed of the crate of mass m1 just before the collision with the second block, in meters per second?  c) What is the height h of the hill, in meters?

A crate of mass m1 slides down a well-lubricated hill of height h, with negligible friction. At the bottom, where it is moving horizontally, it collides with another crate, of mass m2, that initially was sitting at rest and that is attached to a wall by a spring of spring constant k that initially is at its equilibrium length. Assume that the spring itself has negligible mass. a)Given that the distance d that the crates compress the spring is d=0.35 m, calculate the speed v2 of the crates immediately after the collision, in units of meters per second. Use the following values:k=950 N/mm1=2.4 kgm2=2.6 kgμ=0.49g=9.8 m/s2  b) What was the speed of the crate of mass m1 just before the collision with the second block, in meters per second?  c)What is the height h of the hill, in meters?

As given in the figure below, a 4 kg block is accelerated from rest by a compressed spring of spring constant 320 N/m. The block leaves the spring at the spring's relaxed length and then travels over a horizontal floor with a coefficient of kinetic friction uk=0.25. The frictional force stops the block in distance D=5 m. Find the original compression distance of the spring

A vertical ideal spring, spring constant k, is compressed a distance A. A mass m is placed on top of the spring and then released. a) How high will the mass go? Н y=0 y=0 Answer: b) If instead the force exerted by the spring is given by F= -(ky+b), how high will the mass go?

A box of mass m is pressed against (but is not attached to) an ideal spring of force constant k and negligible mass, compressing the spring a distance x. After it is released, the box slides up a frictionless incline as shown in the figure and eventually stops. If we repeat this experiment but instead use a spring having force constant 2k k m 0000000 Smooth Smooth A) just as it moves free of the spring, the speed of the box will be times as great as before. B) the box will go up the incline twice as high as before. just as it moves free of the spring, the kinetic energy of the box will be twice as great as before. D) All of the above choices are correct.

A force of 16 N is applied to a 4.5 kg object (initially at rest) for a time of 5.6 s. What is the speed of the object afterwards? Assume a level, frictionless surface.

Each of the following vectors is given in terms of its xx- and yy-components.