Since there is no friction between the ladder and the wall, there can be no vertical force component. That's the tricky part ;)

So to find the weight, divide the 100N normal force by earths gravitational acceleration, 9.8m/s^2

$W = \frac{N}{g} = \frac{100N}{9.8m/s^{2}} = \frac{100}{9.8} = 10.2kg$

Then;
Draw an arrow at the base of the ladder pointing towards the wall with a value of 30N, to show the frictional force.

5 0

3 years ago

It takes Mars about ____ Earth years to orbit the Sun.

OlgaM077 [116]

At this distance, and with an orbital speed of 24.077 km/s, Mars takes 686.971 Earth days, the equivalent of 1.88 Earth years, to complete a orbit around the Sun. This eccentricity is one of the most pronounced in the Solar System, with only Mercury having a greater one (0.205).

686.971 rounds to 687
HOPE I HELPED!

7 0

3 years ago

Read 2 more answers

The rate at which a candle burns in millimeters per minute is:

anzhelika [568]

since both components, length and time, are measurable
since Rate = length ÷ time 
∴ rate is also measurable and ∴ quantitative.

3 0

3 years ago