7*10.9 = M*35.9
Solve for M
The two numbers above are the distances of the masses from the fulcrum at the 50 cm midpoint location.
Suppose you need to measure the mass of an object, but have only a 7-kg standard mass and a meter stick. Place a knife edge under the 50-cm mark of the meter stick. Then put the 7-kg standard mass at the 39.1-cm mark and place the object so as to balance the standard mass. If the system is balanced when the object is at the 85.9-cm mark, find the unknown mass.
1 answer
1 answer