Question

Your friend is constructing a balancing display for an art project. She has one rock on the left (m, = 2.25 kg) and three on the right (total mass m, - 10.1 kg). The distance from the fulcrum to the center of the pile of rocks is p=0.390 m. Answer the two questions below, using three significant digits. Isingle Epile Part A: What is the value of the torque (Tv) produced by the pile of rocks? (Enter a positive value.) T Nm clockwise Part B: How far away (1) should the single rock be located in order for the display to be in equilibrium? M MacBook Air

Answer 1

a)

T = m g r = 10.1* 9.8* 0.39

T = 38.6 Nm

b)

considering equilibrium of torque

M g d = mg r

d = 10.1* 0.39 / 2.25

d = 1.75 m

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