Engineering Mechanics - KOP: Force and Acceleration

Exercise :: KOP: Force and Acceleration - General Questions

  • KOP: Force and Acceleration - General Questions
16. 

A particle having a mass of 1.5 kg, moves along a three-dimensional path defined by the equations r = 94 + 3t) m, = (t2 + 2) rad, and z = (6 - t3) m, where t is in seconds, and the z-axis is vertical. Determine the r, , and z components of force which the path exerts on the particle when t = 2 s.

A. Fr = 0, F2 = 30 N, Fz = -18.00 N
B. Fr = -240 N, F2 = 66.0 N, Fz = -3.29 N
C. Fr = 0, F2 = 3 N, Fz = -18.00 N
D. Fr = -160.0 N, F2 = 44.0 N, Fz = -12.00 N

Answer: Option B

Explanation:

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