Question

Circular Motion

Barbie is whirled in a horizontal circle on a 1.0 meter long string, such that the string makes a 10.° angle with the horizontal. Calculate Barbie's tangential speed

Please explain how to do it

Answer 1

Step-by-step explanation:

cant calculate as no speed is given but the tangential speed is

= rotation speed x radius x cos 10.°

= rotation speed x cos 10.°

Answer 2

Step-by-step explanation:

As the 1-meter string is at a 10° angle, the radius of horizontal circle Barbie is whirled will be = 1*cos(10°) meter.

Once the rotation speed is given, then multiple that by cos(10°) will be the tangential speed.