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Three uniform spheres are fixed at the positions shown in
Chapter 13, Problem 43P(choose chapter or problem)
Three uniform spheres are fixed at the positions shown in Fig. P13.43. (a) What are the magnitude and direction of the force on a 0.0150-kg particle placed at P? (b) If the spheres are in deep outer space and a 0.0150-kg particle is released from rest 300 m from the origin along a line 45o below the – x-axis, what will the particle’s speed be when it reaches the origin?
Questions & Answers
QUESTION:
Three uniform spheres are fixed at the positions shown in Fig. P13.43. (a) What are the magnitude and direction of the force on a 0.0150-kg particle placed at P? (b) If the spheres are in deep outer space and a 0.0150-kg particle is released from rest 300 m from the origin along a line 45o below the – x-axis, what will the particle’s speed be when it reaches the origin?
ANSWER:Step 1 of 2 a) The net gravitational force will be in the direction 45 from the x axis directing, with magnitude F = 6.67 × 10 11N.m /kg × 0.0150 kg[ 2 kg + 2 1 kg sin 45 ] 2×(0.50 m) (0.50 m) 12 = 9.67 × 10 N