Posted by **Daniel** on Wednesday, October 19, 2011 at 5:45pm.

A block of mass 2.00kg starts at rest at the top of a ramp that is inclined delta= 40.0 degrees with the horizontal. The block slides down the ramp a distance of 3.60 meters where it contacts a relaxed spring with K=300N/m. If the coefficient of kinetic friction between the block and the ramp is 0.300, find:

a) the speed of the block when it contacts the spring.

b) the distance the block compresses the spring

c) the distance between the block's initial position and the highest point it reaches after the spring sends it back up the incline

- Physics -
**Henry**, Thursday, October 20, 2011 at 9:07pm
Wb = mg = 2kg * 9.8N/kg = 19.6N. = Weight of block.

Fb = (19.6N,40deg.).

Fp = 19.6sin40 = 12.60N. = Force parallel to the ramp.

Fv = 19.6cos40 = 15.00N. = Force perpendicular to ramp.

Ff = u*Fv = 0.30 * 15 = 4.5N.

a. Vf^2 = Vo^2 + 2g*d,

Vf^2 = 0 + 19.6*3.6sin40 = 45.36,

Vf = 6.73m/s.

b. Fn = Fp - Ff = 12.6 - 4.5 = 8.1N. = Net force.

d = Fn / K = 8.1N / 300N/m = 0.027m.

## Answer This Question

## Related Questions

- Physics - An 8.70 kg block slides with an initial speed of 1.56 m/s **down** a ...
- Physics - An 8.74-kg block slides with an initial speed of 1.52 m/s down a ramp ...
- College Physics - An 8.67-kg block slides with an initial speed of 1.50 m/s down...
- physics 221 - Question Part Points Submissions Used An 8.61-kg block slides with...
- physics - A 2.7 kg block, starting from rest, slides down a ramp with friction. ...
- Science Psysics - A 6 kg black is placed at the very top of a ramp that is ...
- Physics - A block is placed on a frictionless ramp at a height of 14.5 m above ...
- physics - An 8.65-kg block slides with an initial speed of 1.52 m/s up a ramp ...
- physics-finding velocity - A small block of mass .450 kg is sliding down a ramp ...
- physics - I am having great difficulty with this question. A block is placed on ...

More Related Questions