Ask question

Ask question

All categories

3 years ago

5

If the load is 13 cm from the fulcrum, how much effort is needed to lifth the load ? Help me.

1 answer:

snow_tiger [21]3 years ago

7 0

That depends on a few things that you haven't told us about the setup.
So I'm going to assume one of them, and then give you the answer
in terms of another one:

-- Assume a Class-I lever . . . the fulcrum is between the load and the effort.

-- Then the effort needed to lift the load is

(the weight of the load) x (13 / the distance between the fulcrum and the effort)

You might be interested in

Find the speed of a wave that has a wavelength of 6.0 m and a frequency of 2.0 Hz. V=?

Rzqust [24]

Frequency, υ = 2 Hz

Wavelength, λ = 6 m

We know that speed of a wave, v = υ × λ

⇒ v = 2 × 6 = 12 ms⁻¹

8 0

3 years ago

An object is hung on the end of a vertical spring and is released from rest with the spring 3 unstressed. If the object falls 3.

den301095 [7]

Answer:

The period of the resulting oscillatory motion is 0.20 s.

Explanation:

Given that,

Spring constant $k= 3\ N/m^2$

We need to calculate the time period

The object is at rest and has no elastic potential but it does has gravitational potential.

If the object falls then the the gravitational potential change in to the elastic potential.

So,

$mgh=\dfrac{1}{2}kh^2$

$m=\dfrac{1}{2}\times\dfrac{kh}{g}$

Where,h = distance

k = spring constant

Put the value into the formula

$m=\dfrac{1\times3\times3.42\times10^{-2}}{2\times9.8}$

$m=5.235\times10^{-3}\ kg$

Using formula of time period

$T=\dfrac{1}{2\pi}\times\sqrt{\dfrac{m}{k}}$

Put the value into the formula

$T=\dfrac{1}{2\pi}\times\sqrt{\dfrac{5.235\times10^{-2}}{3}}$

$T=0.20\ sec$

Hence, The period of the resulting oscillatory motion is 0.20 s.

8 0

3 years ago

20. For each improvement in glider design, engineers follow

AleksandrR [38]

B. Engineers perform lots of trials.

5 0

3 years ago

Why do water and table salt have very different properties?

Alexandra [31]

Answer:

D)

Explanation:

6 0

2 years ago

Which statement is true?

vladimir2022 [97]

<span>a.current varies throughout a parallel circuit.

Hope this helps!</span>

8 0

3 years ago