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.(adsbygoogle = window.adsbygoogle || []).push({});

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 dont understand :Assume ...

In the second problem i thought i could get the angle by find the inverse cosine of the ropes lenght, but im not that sure

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# Homework Help: Help! With Physics problems i'm having trouble!

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