Answered

Westonci.ca connects you with experts who provide insightful answers to your questions. Join us today and start learning! Join our Q&A platform and get accurate answers to all your questions from professionals across multiple disciplines. Experience the ease of finding precise answers to your questions from a knowledgeable community of experts.

How many 20 N bricks should you add to increase the friction force on a cart
by 80 N if the coefficient of friction is 0.8?

Sagot :

jcherry99

Answer:

5 bricks.

Explanation:

Comment

This is the kind of question where you have to invent your own formula. It is not obvious what to do.

Formula

Ff (frictional force) = mu (coeficient of friction) * weight of 1 brick * Number needed.

FF(friction force) = mu * weight 1 brick * number of bricks.

Givens

ff = 80 N

mu = 0.8

Brick weight (1 brick) = 20N

n is the number of bricks needed.

Solution

Ff = mu * weight 1 brick * number of bricks   Substitute the givens

80 = 0.8 * 20N * n                                            n is the number of bricks

80 = 16 * n                                                        Divide by 16

80/16 = 16*n/16

5 = n

You have to add 5 bricks.

We appreciate your visit. Hopefully, the answers you found were beneficial. Don't hesitate to come back for more information. We hope you found this helpful. Feel free to come back anytime for more accurate answers and updated information. Thank you for visiting Westonci.ca, your go-to source for reliable answers. Come back soon for more expert insights.