Recent content by dragonladies1

I got: ax=87.9 m/s2 But I have no idea what the equation is for tension...

So in the x direction I have... For the second mass the Fg=2158.2N and on the first mass Fgx=250.405 N and friction which= 433.714*.1=43.37 N Would it be: 2158.2+250.405-43.7=max 2364.905=280ax or is "m" both of the masses and acceleration is squared?

Would it be: 1.006+2.18-.552-1.799=max? I'm not sure what to use for the mass...would it be .65+.3?

Homework Statement Two blocks attached by a string (see figure) slide down a 20° incline. Block 1 has mass m1 = 0.65 kg and block 2 has mass m2 = 0.30 kg. In addition, the kinetic coefficients of friction between the blocks and the incline are 0.30 for block 1 and 0.20 for block 2. (a) Find...

1. Homework Statement A block of mass m1 = 280 g is at rest on a plane that makes an angle θ = 30° above the horizontal. The coefficient of kinetic friction between the block and the plane is μk = 0.10. The block is attached to a second block of mass m2 = 220 g that hangs freely by a string...

Homework Statement Human blood contains plasma, platelets, and blood cells. To separate the plasma from other components, centrifugation is used. Effective centrifugation requires subjecting blood to an acceleration of 2000g or more. In this situation, assume that blood is contained in test...

Thank you very very much. I got the answer.

Thank you. So let me make sure I got this correctly...for my problem: Vfinal=(2*pi*.147)/(1/255)=235.53 m/s Vinitial= 0 T[SUB]final=76 seconds T[SUB]initial=0 So... 235.53/76=3.099 m/s2 Is this correct?

Homework Statement You are designing a centrifuge to spin at a rate of 15,300 rev/min. (a) Calculate the maximum centripetal acceleration that a test-tube sample held in the centrifuge arm 14.7 cm from the rotation axis must withstand. 377361.36 m/s2 (b) It takes 1 min, 16 s for the...

Human blood contains plasma, platelets, and blood cells. To separate the plasma from other components, centrifugation is used. Effective centrifugation requires subjecting blood to an acceleration of 2000g or more. In this situation, assume that blood is contained in test tubes of length L =...

For this problem, I tried using the equation: ac=V2/r and put in 2000= ((2*pi*r)/(1/58))2*r What is the distance of a sample of blood from the rotation axis of a centrifuge rotating at a frequency f = 3480 rpm, if it has an acceleration of 2000g?

Although, I do not believe my answer for the first portion of my problem is correct.

Yes, 9.81. So would it be: 3.86 E-4/9.81 ?

Thank you very much for the help. I also just do not understand what the second statement, "express it as a fraction of the magnitude of free-fall acceleration g." is looking for.

Ok, so I determined that the speed is 1.63, but I don't know why I can't figure out how to find the period for my problem. I plugged in Period= 2π/.43=14.65. Is this correct?