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A 4 m rope is used to keep a toy car moving in a circle. The toy car has a velocity of 2 m/s. If the magnitude of the centripetal force provided by the rope is 173 N, what is the mass of the toy car? ​

Respuesta :

MathPhys

Answer:

173 kg

Explanation:

Centripetal acceleration is equal to the square of the tangential speed divided by the radius of curvature. From Newton's second law, the net force on an object is equal to the mass times the acceleration.

Sum of forces in the centripetal direction:

∑F = ma

T = m v² / r

173 N = m (2 m/s)² / (4 m)

m = 173 kg

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