Actually I forgot to include gravity in my attempted solution post, but I did include it in my actual calculations already and I still got the wrong answer. : / But Fnet was the average spring force and gravity.
Thanks for pointing out that mechanical energy is not conserved during the...
Homework Statement
"A spring is hung from the ceiling. A pan of mass 100.0 g is attached to the end, which causes it to stretch 5.00 cm. Find the maximum distance the pan moves downward when a lump of clay of mass 120.0 g is dropped from a height of 40.0 cm onto the pan."
The correct answer...
Homework Statement
A rock of mass 0.400 kg is released from the surface and sinks in the ocean. As the rock descends it is acted upon by three forces: gravity, buoyancy, and drag. The buoyancy is an upward force equal to half its weight. Drag from the water can be modeled by F = kv...
Thanks for the responses. Ah, I was so close in part b)! I had the derivative but focused on how difficult it was to solve rather than simply making observations about the possible ways it could equal zero.
Ah...I think I misunderstood the question in part c). It says "find the maximum...
Homework Statement
A block of mass m is pulled across a level surface by a rope that makes an angle θ with the horizontal. The coefficient of friction is μ.
(a) Determine the amount of force F required to slide the block at a constant velocity.
(b) Determine the optimum angle at...