Posted by **Zach** on Thursday, March 1, 2012 at 5:36pm.

Block M (mass of 15.65 kg)

is initially moving to the left with a speed of 3.77 m/s. The mass of m is 8.26 kg and the coefficients of friction are Us = 0.411 and Uk = 0.304. The string is massless and the pulley is

massless and frictionless. How fast will M be traveling when m has fallen through a height h = 2.47 meters?

W=change in E

This is what I have done:

1/2Mvf^2-1/2Mvi^2+1/2mvf^2-1/2mvi^2-mgh-UkMg=0

I then solved for for vf. The answer is suppose to be 4.62 but I am way off. I need help fixing my set up.

## Answer this Question

## Related Questions

- Physics - A block of mass m1 = 2.4 kg initially moving to the right with a speed...
- Physics - A block of mass m1 = 2.4 kg initially moving to the right with a speed...
- physics - Two blocks move along a linear path on a nearly frictionless air track...
- Physics - Two blocks move along a linear path on a nearly frictionless air track...
- physics - A block of mass m1 = 2.4 kg initially moving to the right with a speed...
- Physics - Two blocks move along a linear path on a nearly frictionless air ...
- physics - block a in figure 1 has a mass of 10kg, and block b has a mass of 30 ...
- Physics - A bullet with a mass m=12.5 g and speed v=85.4 m/s is fired into a ...
- Physics - A 2kg mass, initially at rest, is shot from a spring (k=550N/m) which...
- physics - As shown in the figure, a block of mass M1 = 0.470 kg is initially at ...

More Related Questions