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3 years ago

4. a) A load of 1000N can be lifted by applying an effort of

Mathematics

1 answer:

miv72 [106K]3 years ago

4 0

Step-by-step explanation:

load=1000N

effort=250N

load arm=25cm

effort arm=?

Now,

E×E.D=L×L.D

250×E.D=1000×25

E.D=1000×25÷250

E.D=100cm

therefore,effort arm is 100cm.

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3 years ago

Read 2 more answers

Help me answer this please!!! i will mark you brainliest

goldfiish [28.3K]

Answer:

363 ft.

Step-by-step explanation:

To calculate the base side which is b we use the trigonometric identity called cosine.

$cos \theta=\frac{base}{hypotenuse} \\\\cos25 = \frac{b}{400}\\\\b=400*cos 25\\b=400*0.906\\b=362.5\ ft$

Since we the answer to the nearest whole number it would be b = 363 ft.

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3 years ago