- #1

reminiscent

- 131

- 2

## Homework Statement

Two adults and a child want to push a wheeled cart in the direction marked x in Fig. P4.33. The two adults push with horizontal forces F1 and F2 as shown, except that the child goes away. Keeping the magnitude of F1 and F2 the same, what angle should F1 make to have the box move in the desired direction? Using that angle, and again using the box’s weight of 840 N, what will the new acceleration be?

This problem is an edit of an actual problem, which have subquestions as follows:

(a) Find the magnitude and direction of the smallest force that the child should exert. Ignore the effects of friction. (answer = 17 N 90 degrees clockwise from x-direction)

(b) If the child exerts the minimum force found in part (a), the cart accelerates at 2.0 m>s2 in

the +x-direction. What is the weight of the cart?

## Homework Equations

F=ma

## The Attempt at a Solution

So I get that the new problem is focusing on the box. We are giving the weight of the box, but am I supposed to use the direction of the force that the baby exerts in the original problem?

Last edited: