Recent content by physics333

Would anyone else like to take a guess?

I still need more information...I'm not as smart as some as you. Someone get me started and I can figure it out... Thanks

Is mechanical energy always conserved? Explain how this does not violate the law of conservation of energy by an example.

A 1.4 kg box slides 15m across the floor. The coefficient of kinetic friction between the box and the floor is 0.3. I found that friction force in slowing the box was -61.74J. Is this right? What was the initial velocity of the box? I worked this problem using Kf = Ki + Wnc and found...

A block having a mass of 2.80 kg is given an initial velocity of 1.2m/s when it collides with a spring. The constant force of friction acts between the block and the surface with (mu sub k=0.5) and the force constant of the spring is k=100N/m. What is the maximum compression? I've been...