An 85 kg object is moving at a constant speed of 15 m/s in a circular path, which has a radius of 20 meters. What centripetal force is exerted on the body ?
a. 63.75 NB. 765.00 NC. 956.25 ND. 42.50 N
The answer is : 956.25 N Fc = Centripetal Force, m = mass, V i= velocity and r is radius
Fc = [m × (V)²] ÷ r
Fc = [85 kg × (15 m/s)²] ÷ 20 m
Fc = [85 kg x 225 m²/s²] ÷ 20 m
Fc = 19,125 kg•m²/s² ÷ 20 m
Fc = 956.25 kg•m/s² or 956.25 N
