The force acting on a particle of mass m can be represented by a vector F. We ma

Question

The force acting on a particle of mass m can be represented by a vector F. We may regard F as the resultant of two single forces F_t and F_n which are directed, respectively, along the tangent line and principal normal to the particle's orbital curve at a given instant. Consider a particle in uniform circular motion; the speed of the particle is constant and the circular orbit has a constant radius. Which one of the following statements is correct: F_t = 0 and F_n = 0 F_t = 0 and F_n not equal to 0 F_t not equal to 0 and F_n = 0 F_t not equal to 0 and F_n not equal to 0

Explanation / Answer

b) Ft=0 Fn=/ 0

speed is constant so Ft=0 but velcity vector canges so Fn=/ 0

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