Answer:
Explanation:
Given
mass of chair m=21 kg
Force required to set chair in motion is 175 N
Once the chair is in motion 137 N is require to move it with constant velocity
i.e. 175 N is the amount of force needed to just overcome static friction and 137 is the kinetic friction force
thus
where 
is the coefficient of static friction and N is Normal reaction
Answer:
My Words
Gravity, also called gravitation, in mechanics, the universal force of attraction acting between all matter. On Earth all bodies have a weight, or downward force of gravity, proportional to their mass, which Earth's mass exerts on them. Gravity is measured by the acceleration that it gives to freely falling objects.
Explanation:
Not my own words
The gravitational force is a force that attracts any two objects with mass. We call the gravitational force attractive because it always tries to pull masses together, it never pushes them apart. In fact, every object, including you, is pulling on every other object in the entire universe!
I think the correct answer is C
The combination of all of the forces acting on object is net force.
The answer is heat. The oven will transform electrical energy into heat energy. :)
