Question

Michelle learns in science class that simple machines such as an inclined plane can change the amount of force needed to lift heavy objects. She decides to test this with an experiment. Michelle chooses a 10 kg weight. She sets up a ramp made of smooth metal that makes an angle θ with the floor. She attaches a spring scale to the weight and the top of the ramp in order to hold the weight in place. She records the force from the spring scale, then changes θ and records it again. She repeats this several times. In this experiment, what is the outcome variable (dependent variable)? A. the amount of force on the spring scale B. the angle θ between the ramp and the ground C. the material the ramp is made of D. the mass of the weight Reset Submit

Answer 1

A. the amount of force on the spring scale

she contriols the angle, and records both it and the force

Answer 2

Answer:

A. the amount of force on the spring scale

Explanation:

In every experiment we make some changes to the input variable and we measure the effect of change as the outcome variable

Input variable is controlled by us, but the output variable cannot be changed directly, it can be changed by changing the input variable.

In this experiment Michelle changes the angle θ between the ramp and the ground to find its effect on force required to lift.

The force required to lift is the weight of the object

Since, we change the angle, it is the input variable

and since, we measure the weight from the scale, it is the output variable