Recent content by kimikims

So would it be... (37.4) (9.8) + (37.4) (.84)^2 (14) = 735.97 ?

tan = V^2 / Rg ?? tan = (59)^2 / (56.5) (9.8) tan = .62867905 = .0109729727 ? that doesn't make sense

So would it be the square root of the radius times gravity? = square root (0.478)(9.8) = 2.16 m/s^2 ??

V min = Square root [(Ms)(g)(R)] =Square root (15.9)(0.478)(9.8) =Square root (74.48196) =8.63 m/s ?

So for part 2... it should be uhm (11.71) (9.8) + (11.71) (.84)^2 (14) =230.43 N?

Thank you! :biggrin:

Sorry I meant 48.1 m/s not 4.8 m/s... So it would be: Fc = m (V^2/R) Fc = 94.1 [(48.1)^2 m/s / 31.9) Fc = 6824.78 N?

Wait... M x g tan = m (V^2/g) g tan = V^2 / g 9.8 tan = [(16.2)^2 / 56.5] 9.8 tan = 4.644955752 (Do I just type it in as that? or do I need to divide by 9.8) I am trying to find the degree of the angle.

Is this right?? Speed = 48.1 m/s g = 9.8 m/s^2 Problem #1 7.39 g (9.8 m/s^2) = A A = 72.422 R = V^2 / A R = (48.1 m/s)^2 / 72.422 R = 31.94 Problem #2 F = mV^2 / R What's m?? F = (?)m x (4.8)^2 / 31.94

Is this the right equation? Mg = 1.3 g = 9.8 m/s^2 Radius = 56.5 m Speed = 59km/hr m = 0 Mg Tan = mV^2/R 1.3 Mg Tan = 0 x (59)^2 / 56.5 But wouldn't that just make it zero?? I'm lost.

This is a hard problem! :cry: Anyone know what my mistakes are?? ----- A passenger on the ferris wheel normally weighs 367 N. The ferris wheel has a 14 m radius and is equipped with a powerful motor. The operator revs it up so that the customers at the top of the wheel feel zero g's (they...

I tried workin this problem out.. and it's not working! :frown: --- An airplane is flying in a horizontal circle at a speed of 48.1 m/s. The 94.1 kg pilot does not want his radial acceleration to exceed 7:.39 g. The acceleration of gravity is 9.8 m/s^2 1) What is the minimum radius...

Where do I start? A curve of radius 56.5 m is banked so that a car traveling with uniform speed 59 km/hr can round the curve without relying on friction to keep it from slipping to its left or right. The acceleration of gravity is 9.8 m/s^2 What is Q? Answer in units of degrees.

I'm not sure what formula to use on this? A ball of mass 15.9 g is attached to a cord of length 0.478 m and rotates in a vertical circle. The acceleration of gravity is 9.8 m/s^2 What is the minimum speed the ball must have at the top of the circle so the cord does not become slack...

I tried working this problem- but it doesn't come out right.. any help? My answers are in blue. :cry: --- A child holds a sled on a frictionless, snowcovered hill, inclinded at an angle of 27 degrees. 1) If the sled weights 60 N, find the force exerted on the rope by the child. Answer...