Bob is pushing box of mass **100 kg** with a constant force **F**;
however, his force isn't purely horizontal, but
exerted at an angle of **10 degrees below the horizontal**.
The sticky floor exerts a frictional force of **400 N**
to the left,
but the box does slide across the floor.
Starting from rest,
it moves **10 meters** in **5 seconds**.

- What is the force
**F**with which Bob pushes the box? - What is the normal force of the floor on the box?

Fill in these tables to help yourself solve the problem.

force x y -------------------------------- | | | | | | | | | | | | | | | | -------------------------------- total | | -------------------------------- x y -------------------------------- accel | | | | --------------------------------

Copyright © Michael Richmond. This work is licensed under a Creative Commons License.