- #1
songokou77
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1)Find the stopping distance of that same car when it is traveling up a 17.1° slope, and it locks its wheels while traveling at 34.9 m/s (78.2 mi/hr). Assume that mu_k does not depend on the speed.
2)A mass of 4.100 kg is suspended from a 1.430 m long string. It revolves in a horizontal circle.
The tangential speed of the mass is 2.899 m/s. Calculate the angle between the string and the vertical (in degrees).
I'm having trouble with this two problems. The first one all i think of are the formulas : a=v^2/(2(distance), and i have to find the distance, but i don't understand :Assume ...
In the second problem i thought i could get the angle by find the inverse cosine of the ropes lenght, but I am not that sure
2)A mass of 4.100 kg is suspended from a 1.430 m long string. It revolves in a horizontal circle.
The tangential speed of the mass is 2.899 m/s. Calculate the angle between the string and the vertical (in degrees).
I'm having trouble with this two problems. The first one all i think of are the formulas : a=v^2/(2(distance), and i have to find the distance, but i don't understand :Assume ...
In the second problem i thought i could get the angle by find the inverse cosine of the ropes lenght, but I am not that sure
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