1
answer
0
watching
117
views
10 Nov 2019
A 4.5 kg box slides down a 4.3-m-high frictionless hill, startingfrom rest, across a 2.0-m-wide horizontal surface, then hits ahorizontal spring with spring constant 510 N/m. The other end ofthe spring is anchored against a wall. The ground under the springis frictionless, but the 2.0-m-long horizontal surface is rough.The coefficient of kinetic friction of the box on this surface is0.22. What is the speed of the box just before reaching the roughsurface? What is the speed of the box just before hitting thespring? How far is the spring compressed? Including the firstcrossing, how many complete trips will the box make across therough surface before coming to rest?
A 4.5 kg box slides down a 4.3-m-high frictionless hill, startingfrom rest, across a 2.0-m-wide horizontal surface, then hits ahorizontal spring with spring constant 510 N/m. The other end ofthe spring is anchored against a wall. The ground under the springis frictionless, but the 2.0-m-long horizontal surface is rough.The coefficient of kinetic friction of the box on this surface is0.22. What is the speed of the box just before reaching the roughsurface? What is the speed of the box just before hitting thespring? How far is the spring compressed? Including the firstcrossing, how many complete trips will the box make across therough surface before coming to rest?
Nelly StrackeLv2
19 Feb 2019
