The object of this pre-lab is to use a force table to balance one or more forces
ID: 2168515 • Letter: T
Question
The object of this pre-lab is to use a force table to balance one or more forces using another force or by using components. The force table consists of a circular platform with markings at the edge showing the angle for a circle centered about the center of the table. A mass, m = 110 gram is placed on a hanger which has a mass of 50 g, giving a total mass of 160 g. The hanger is then hung at an angle of 110 degree over a pulley attached to the force table by using a string of negligible mass. The pulley over which the string rests has very low frictional force. (See sketch) Note: There are four exercises for this pre-lab. As you complete one exercise or have exhausted all your tries, the next exercise will be displayed since it may depend on the results of the earlier exercise(s). In addition, this significantly reduces the time to process each submission. When you have exhausted all your tries, the computer's answer will be displayed. Exercise 1 - Tension and Components of a Weight What is the tension, F, in the string? (Note: The tension is equal to the weight, W = mg, of the mass.) Tries 0/10 What are the components of the vector F? The +x and +y axes are at 0 degree and at 90 degree respectively. Fx = Fy = Tries 0/10 This discussion is closed.Explanation / Answer
a)
T = mg = (0.160)*9.8 = 1.568 = 1.57 N
b)
Fx = F cos110 = 1.568 cos110 = -0.536 N
Fy = F sin110 = 1.568 sin110 = 1.47 N