Posted by **Aileen** on Sunday, November 7, 2010 at 9:22pm.

I calculated parts a, b, c, but cannot figure out d. I tried combining all the forces and adding them but I am missing something?

There is an 18 kg box on a 32degree incline. a HORIZONTAL force of 150 N is given to the box

a) How much work is done by the horizontal force F = 150 N on the 18-kg block of the figure when the force pushes the block 5.1 m up along the 32degree incline? µk = 0.13.

ANSWER: 650 J

b) How much work is done by the gravitational force on the block during this displacement? -480 J

c) How much work is done by the normal force? 0J

d) What is the speed of the block (assume that it is zero initially) after this displacement?

I tried adding up (Fpcostheta - mgcostheta -Ffriction) but it doesn't work

thank you!!

## Answer This Question

## Related Questions

- Physics - A box of mass m=1.5 kg is attached to a spring with force constant k=...
- Physics - A box is sliding up an incline that makes an angle of 15.0 degrees ...
- physics help - I know that the answer to this problem is (0.2237232293) and to ...
- physics - A stock room worker pushes a box with mass 11.2 kg on a horizontal ...
- physics - A 25 kg box slides, from rest, down a 9-m-long incline making an angle...
- Physics - If someone pushes on a box on a horizontal floor with a horizontal ...
- physics - A 20.0 kg box slides down a 12.0 m long incline at an angle of 3.0 ...
- physics - A 20.0 kg box slides down a 12.0 m long incline at an angle of 3.0 ...
- physics - you drag a heavy box along a rough horizontal floor by a horizontal ...
- physics - you drag a heavy box along a rough horizontal floor by a horizontal ...

More Related Questions