A simple machine has an IMA of 7. If the effort force of 5N is applied over a distance of 4m, what is the ideal resistance force, and how far does the load travel?a) Fr = 0.71 N and dr = 0.57 m. b) Fr = 0.71 N and dr = 28 m. c) Fr = 35 N and dr = 0.57 m. d) Fr = 35 N and dr = 28 m.

Option C

Explanation:

From the question we are told that:

Effort force

Effort distance

Generally the equation for IMA is mathematically given by

In Terms of Distance

In Terms of Force

Therefore

and

Option C

what experimental evidence led scientists to change from the previous model to this one?

a few of the positive particles aimed at a gold foil seemed to bounce back.

the colors of light emitted from heated atoms had very specific energies.

experiments with water vapor showed that elements combine in specific proportions.

cathode rays were bent in the same way whenever a magnet was brought near them.