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so the frequency = 17.79Hz I tried to figer out the acceleration to I get 1499.9 meters per second squared

is it definitely 112 I get 115.4

square root of 0.16 squared - 0.08 squared then dived all that by 16 = 115.4

dose w = 106rad/s

do I have to rearrange the equation

I think I need the equation for angular velocity to find the frequency do you no what this is equation is

is x 163.9

Do you no what I'm doing wrong

is x 639.6 mm

from that equations I got 0.04233 so is x 423.3 mm

is x 62.5

if I divide both these equations by each other dose that illiminate w and the squaring but I still can't figure out x

Thanks for your help I do have a text book but I don't understand it I've not done any electronics before would you be able to write the formula so I could solve it thanks

How do I solve for v

I still don't understand this could you please explain what I have to do abit more thanks

Thanks for your help could you please explain what's what in both formulas I don't no what info to put were

A beam is made from universal column with an “I” Section to BS4. The size of the beam is 356X127X39. The modulus of elasticity is 205 GPa. The maximum tensile stress in the beam must not...

A sreirs circuit comprises an inductor of 70 mH, a resistor of 200Ω and a capacitor of 22µF. A sinusoidal current of 40mA at 50 Hz flows in the circuit.

i. Draw the circuit and the...

Is the answer 1.554 Hz
Thanks for your help

Hi thanks for your reply could you please explain what I put into the formula and were I'm not very good at this sort of thing

A tuned circuit comprises of 600µH inductor connected in series with a 100 pF capacitor and a resistor of 10Ω. Determine the resonant frequency of the tuned circuit, its Q-factor and bandwidth

A box weighing 2500kg slides from a slope of length 10 m and height of 2 m. determine the velocity of the box when it reaches the bottom

Calculate the power transmitted by a hollow circular shaft with external diameter of 250 mm when rotating at 100 rpm. If the maximum shear stress us 60 MN per square meter and J= 220X 10^6 mm^4.

A piston performs reciprocal motion in a straight line which can be modeled as SHM. Its velocity is 16 m/s when the displacement is 80 mm from its midpoint, and 4 m/s when the displacement is 160 mm...

A simple pendulum has a bob attached to inextensible cord 60 cm long. Determine it s frequency

Thanks for that much appreciated

A batch of resistors is tested to see how close they come to the manufacturer's specification of 47 ohms. Data is tabulated in bins of 0.2 ohm as follow:


Resistance ...

I don't have a calc book do you no what the best 1 to get is for someone who isn't very good at this level of maths.

How many decimal places do you think I should go to because it just says...

Hi
I don't understand trig identities at all please could you explain it step by step

Thanks

Andy

hi this is the bit I don't understand or were you got it from
-1 B=13
2 2
B=-13
please could you explain what I have to do step by step

thanks

Andy

reduce the following algerbraic fractions to partial fractions

7x-4
(x-2)(2x-3)

5x-7
(3x+2)^2

(x-3)(x+4)
x^2-12x

use trigonometric and hyperbolic identities to solve and simplify the following:

4sin^2 theta +5cos theta =5
3tan^2 theta+5=7sec theta
prove that cosh^2x-sinh^2x=1
prove that sinh2x=2sinhxcoshx...

I've put some more questions up about trigonometric and hyperbolic identities, power series and geometric progressions if you know anything about them.

Thanks

Andy

use trigonometric and hyperbolic identities to solve and simplify the following:

4sin^2 theta +5cos theta =5
3tan^2 theta+5=7sec theta
prove that cosh^2x-sinh^2x=1
prove that sinh2x=2sinhxcoshx...

using the power series, estimate the values of the following engineering variables:

e^3
sin4
cosh3
cos2

any help with this would be much appreciated

thanks

A ball is dropped from a height of 80m. It bounces to a height equivalent to 0.8 of the original height. Calculate the total distance the ball will travel when it eventually stays at rest. (you will...

Thanks for your help much appreciated

I can't get 23.32 can you write how you put this into a calculator please

thanks

is the angle

sin75/4.88=0.198 degres

I couldn't get the same answers as you on the example but I tried it for the question and I got
75 degres for the angle between 55 and -20
2^2+5^2-2(2x5)cos75=23.824

last time I used the cosine...

Thank you that makes sense now I was confused because I put the speed in the formula by accident instead of the time but the answer was still write

To be honest I don't no what the units are I've confused myself now

is that definitely write or should it be
s=1/2(0.64)(40)^2=512
512/4.3988=116.395 revolutions

if the formula is s=1/2at^2 is the t time or speed

is the constant acceleration
40/62.5=0.46
s=1/2(0.64)(62.5)^2=1250
1250/4.3988=284.168 revolutions

The question dose say it accelerates uniformly though or is that different

hi

1a. =70.71
1b. =-100

2a.
first I converted 225 kmh into meters a second

225 x (5/18) =62.5

thanks for your reply I have started a couple of threds now with different questions I didn't no how to use this website at first.

please could you do an example using different values so I can...

thanks for your help

1a.
100 x sin(2 pi x (50 x o.oo25)) = 1.370

1b.
100 x sin(2 pi x (50 x 0.015)) = 8.215

I'm not sure if these are write.

using sinusoidal functions and radians to solve the following

A sine wave has a maximum value of 100v and a frequency of 50hz. Determine the instantaneous voltage present at
(a) 2.5ms and (b)...

A force of 2n acts upon a point 'A' at an angle of 55 degres. From the same point 'A' another force of 5n at an angle of -20 degres is applied. Calculate the resultant force and its direction using...