Questions: 1. A piano is moved up a ramp that is 3 m long with a force of 5
N. What is the work done on the piano? What is the name of the
simple machine for "ramp”? (6)
Formula
Show your steps (with
units)
Answer (with units)
Sentence
Simple Machine

Workdone = 15 Nm

Explanation:

Given the following data;

Length of ramp (distance) = 3 m

Force = 5 N

To find the work done on the piano;

Mathematically, work done is given by the formula;

Workdone = force * distance

Substituting into the formula, we have;

Workdone = 5 * 3

Workdone = 15 Nm

II. The name of the simple machine for "ramp” is an inclined plane.

Typically, an inclined plane has a flat supporting surface that is set at an angle with an end higher than the other and it can be used to lift or lower an object.

explanation:

v=uf/(u-f)

= 5.-10/(5+10) convex lens has negative focal length

no. dot product   =0 when vecs at right angles