A toy gun uses a spring with a force constant of 425 N/m to propel a 14.0 g steel ball. The spring is compressed 7.40 cm and friction is negligible. (a) How much force (in N) is needed to compress the spring? (Assume the gun is aimed in the positive direction. Indicate the direction with the sign of your answer.) Answer: _________________ N (b) To what maximum height (in m) can the ball be shot? Answer: _________________ m (c) At what angles above the horizontal (in degrees) may a child aim to hit a target 3.00 m away at the same height as the gun? (Enter your ans

An ideal spring hangs vertically. When a 359- g object is hung from the bottom end, and lowered gently, the spring stretches 6.23cm. How much would the spring have stretched, in cm, if the mass of the object had been 601 g instead ?

A mass resting on a horizontal, frictionless surface is attached to one end of a spring; the other end is fixed to a wall. It takes 3.0 JJ of work to compress the spring by 0.13 mm . If the spring is compressed, and the mass is released from rest, it experiences a maximum acceleration of 12 m/s2m/s2.  Find the value of the mass. Express your answer to two significant figures and include the appropriate units.

Jum The mass of the block depicted in the image is 1.60 kg. The spring has a spring constant of 76.9 N/m. The coefficient of static friction between the block and the floor is 0.726. Assume that the spring makes no contact with the floor and therefore friction only acts on the block. How far must the block and spring assembly be compressed to just barely overcome the force of static friction acting on the block? Report your result in meters.