Question

You’ve been given the challenge of balancing a uniform, rigid meter-stick with mass M = 95 g on a pivot. Stacked on the 0-cm end of the meter stick are n identical coins, each with mass m = 4.3 g, so that the center of mass of the coins is directly over the end of the meter stick. The pivot point will be measured from the 0-cm end of the meter stick.

Determine the distance d_a in cm if there is n_a = 1 coin on the end of the meter stick, and the system is to remain in static equilibrium. 1) d_a =   

Determine the distance d_b (in cm) if there are n_b = 5 coins on the end of the meter. 2) d_b =

What is the minimum number of coins you would have to stack at the 0-cm mark if the distance was less than 9.99 cm? Round to the nearest whole coin. 3) n=

Answer 1