Thursday

October 23, 2014

October 23, 2014

Posted by **Christine** on Sunday, July 8, 2012 at 11:24pm.

1) How much work is done by friction as the box comes to a stop?

2) Assuming the frictional force is constant, how far will the box slide before it comes to a stop?

- Engineering Physics -
**drwls**, Monday, July 9, 2012 at 12:39am1) The work done by friction will equal the initial potential energy of compression in the spring, but will be of the opposite sign. Work is done against friction, not by it.

2)

(1/2)kd^2 = M*g*u*X

d is the initial spring compression.

g is the acceleration of gravity

M is the box's mass

k is the spring constant

u is the kinetic coefficient of friction

Solve for X, the distance that the box slides.

**Answer this Question**

**Related Questions**

Physics (work and springs) - A 4kg box is compressed 50cm on a spring (k=800 N/m...

PHYSICS - A 5.00-kg box slides 7.00 m across the floor before coming to rest. ...

physics - A box of books weighing 314 N is shoved across the floor by a force of...

Physics help! - A box of books weighing 323 N is shoved across the floor by a ...

physic - A box of mass 2 Kg lies on a rough horizontal floor with the ...

physics - A box having a mass of 50kg is dragged across a horizontal floor by ...

physics - A box of books weighing 229 N is shoved across the floor by a force of...

physics - A box of books weighing 229 N is shoved across the floor by a force of...

physics - A box of books weighing 229 N is shoved across the floor by a force of...

physics - a 70 kg box slides along the floor by a 400N force. the coefficient of...