Question

In the Forces and Motion lab, you will be able to apply a known amount of force to an object to measure the coefficient of kinetic friction between the object and a wooden surface. Which of the following situations would be best for measuring this coefficient of kinetic friction? (two correct answers) When the object is at rest, slowly add more and more applied force until the object moves. Apply a large force for a short time to get the object moving then set the applied force to zero. Take data while the object is sliding to a stop. Change the surface to ice so the friction is zero. Apply a large force to get the object moving and then make this force smaller and smaller until the object comes to rest Apply a large constant force to the object to make sure it moves. When the object is at rest, apply a constant force small enough that the object remains at rest.

There are two correct answers and not only one

Answer 1

Soln 09 a just start we When any object is at rest by applying some force care moring at that time there will be Static friction act on the a object so will not able a to able a to measure the coefficient of Kinetic friction so option ca), (e) &(f) will not be corret. for option (c) there is will also friction so option (e) incorrect so correct because ith both option object will in motion. по (d) will be option (b) 6