Sunday

December 21, 2014

December 21, 2014

Posted by **Jadelyn** on Sunday, November 29, 2009 at 12:01am.

i tried and I got 2.8972 seconds but it was wrong =(

Thank you!

- PHYSICS -
**drwls**, Sunday, November 29, 2009 at 2:58amWhen the stone takes off, it starts out at at angle of 37 degrees above the horizontal. (That is the complement of 53 degrees). The speed is initially

2*pi*0.55*5 = 17.28 m/s, and the vertical speed component is initially

17.28 sin 37 = 10.40 m/s

The stone spends 10.40/g = 1.06 s going up and an equal time going down, to the elevation where it started, for a total of 2.12 s in the air. You will need to add additional time to that to account for traveling from 0.55 + 0.55 sin 53 = 0.989 meters (the release altitude) to the ground. That is about 0.09 seconds more, for a total of 2.21 seconds

- PHYSICS -
**Jadelyn**, Sunday, November 29, 2009 at 2:25pmThank you so much!!!

I took the sin of 53 deg instead of 37 deg

**Answer this Question**

**Related Questions**

Physics - A boy is whirling around a stone tied at the end of a 0.71 m long ...

physics - A stone tied to the end of a string, 80 cm long, is whirled in a ...

physics - a stone is tied to the end of a string and is swung with a constant ...

physics - a .150kg object tied to a string is whirled in a horizontal circle ata...

physics - A mass 5kg is whirled in a horizontal circle @ 1 end of a string 50cm ...

physics - The propeller blades of an airplane are 2.7 m long. The plane is ...

physics - a stone of mass 1 kg is tied to the end of a string 1m long . it is ...

physics constant angular acceleration - A wheel with radius 25.2 cm rotates with...

Physics - A flywheel with a diameter of 2.45 m is rotating at an angular speed ...

college physics - A stone with a mass of 0.800 is attached to one end of a ...