Question

In the absence of friction, how much work would a child do while pulling a 12 kg wagon a distance of 3.9 m with a 22 N force? O 47J O 60J O 86 J O991

Answer 1

Answer:

W = 86 J

Explanation:

Work done by friction force is given by the formula

$W = F_f . d$

here since the wagon is pulled by horizontal force such that speed remains constant

so here we will have

$F_f = F_{ext} = 22 N$

Now we will have

$W = 22\times 3.9$

$W = 86 J$

so work done against friction force will be equal to 86 J

Answer 2

The work done in pulling the wagon in the absence of friction is 458.64 J.

What is Work done?

The work done in pulling the wagon is calculated as follows;

W = Fr

where;

• F is the applied force
• r is the distance traveled by the load

Substitute the given parameters and solve for work done

W = 3.9 X (12 x 9.8)

W = 458.64 J

Thus, the work done in pulling the wagon in the absence of friction is 458.64 J.

Learn more about work done here: https://brainly.com/question/8119756