Author Question: A 4.00-kg mass is attached to a very light ideal spring hanging vertically and hangs at rest in the ... (Read 500 times)

tingc95 · **on:** Jul 29, 2018

A 4.00-kg mass is attached to a very light ideal spring hanging vertically and hangs at rest in the equilibrium position.

The spring constant of the spring is 1.00 N/cm. The mass is pulled downward 2.00 cm and released. What is the speed of the mass when it is 1.00 cm above the point from which it was released?
A) 0.0443 m/s
B) 0.0744 m/s
C) 0.0201 m/s
D) 0.0866 m/s
E) The mass will not reach the height specified.

Question 2

A 5.00-kg box slides 4.00 m across the floor before coming to rest. What is the coefficient of kinetic friction between the floor and the box if the box had an initial speed of 3.00 m/s?

A) 1.13
B) 0.587
C) 0.115
D) 0.229
E) 0.267