Posted by **Zac** on Thursday, July 26, 2012 at 11:58am.

A car with fuzzy dice hanging from the rear view mirror by a single string drives along at a

constant 25.0 m/s. a) If the dice have a mass of 0.030 kg, what is the angle of the string (relative to

vertical)? b) What is the tension in the string? c) As the driver takes a turn with a radius of 150.0 m,

what will the angle then be? (at same speed) d) What is the tension in the string during this turn?

- Physics -
**Elena**, Thursday, July 26, 2012 at 1:57pm
(a) v=const, a=0 =>α =0,

(b)T=m•g.

(c)

m•v² /R=T•sin α,

m•g=T•cos α.

m•v²/R•m•g=T•sin α/T• cos α.

v²/R •g = tan α.

α =arctan(v²/R •g).

(d)

T=mg/cosα

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