8. Choose the statements that are FALSE. A. An object will...

8. Choose the statements that are FALSE. A. An object will undergo constant acceleration if it is in equilibrium. B. Subject to the same net force, a larger mass will accelerate at a greater rate than a smaller mass. C. If the vector sum of the forces on an object is not zero, the object is in equilibrium. D. A net force of 125 N acts horizontally on an object that weighs 125 N. Therefore, the object does not accelerate. E. If an object is at rest, then there are no forces acting on the object. F. None of these statements are false.

Transcript

00:01 So, in our first case, let us suppose we have an object that will undergo constant acceleration.

00:15 Now here, as it is undergoing constant acceleration, will it be in equilibrium or not? now, the equilibrium condition is such that the summation of forces along the horizontal axis have to be 0, and the summation of forces along the vertical axis have to be 0, which in turn will mean that the net force will be equal to 0.

00:36 Now if the net force is 0, then the acceleration will be 0 and not constant.

00:47 Thus, this statement will be false.

00:53 Now in our next case, let us consider two objects.

00:59 One has a greater mass than the other one.

01:06 Now, if they're subjected to the same net force, which one shall accelerate at a greater rate? now, we know that acceleration is equal to the force per unit mass.

01:17 Thus, the acceleration is inversely proportional to the mass of the object.

01:23 So, if the mass is high or greater in value, for a constant force, then the acceleration will decrease or have a lower value.

01:41 Thus, this given statement will also be false.

01:46 Now, for our next case, we know that for an equilibrium condition, the net force that is the vector sum of all the forces must be zero.

02:04 Thus if this condition isn't satisfied, the system will not be in equilibrium.

02:08 So the given statement will be false.

02:12 In our next case, we have a net force of 125 newton that is acting horizontally on an object that has a weight of 125 newton...

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