High School

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Two cars are traveling at the same speed of 22 m/s on a curve with a radius of 114 m. Car A has a mass of 1040 kg, and Car B has a mass of 1610 kg.

(a) Find the magnitude of the centripetal acceleration for Car A.

(b) Find the magnitude of the centripetal force for Car A.

(c) Find the magnitude of the centripetal acceleration for Car B.

(d) Find the magnitude of the centripetal force for Car B.

Answer :

Answer:

(a) 4.25 [tex]m/s^2[/tex]

(b) 4420 N

(c) 4.25 [tex]m/s^2[/tex]

(d) 6842.5 N

Explanation:

(a) Centripetal acceleration of car A, [tex]a_c[/tex], is given as;

[tex]a_c = \frac{v^2}{r}[/tex]

where v = velocity of car

r = radius of curve

[tex]a_c = \frac{22^2}{114}\\ \\\\a_c = 4.25 m/s^2[/tex]

(b) Centripetal force of car A is given as:

[tex]F_A = m_A*a_c = m_A*\frac{v^2}{r}[/tex]

[tex]F_A = 1040 * 4.25 = \\\\\\F_A = 4420 N[/tex]

(c) Since car A and car B have the same speed, they have the same centripetal acceleration ([tex]a_c = 4.25 m/s^2[/tex])

(d) Centripetal force of car A is given as:

[tex]F_B = m_B*a_c = m_B*\frac{v^2}{r}[/tex]

[tex]F_A = 1610 * 4.25 = \\\\\\F_A = 6842.5N[/tex]

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