3. Two masses are attached to a uniform meter stick as shown in the figure below. The masses of m1 and m2 are as given and the meter stick weighs 150 g. A force F with unknown magnitude is applied on one end of the stick at an angle of 30° to balance the system. 30 cm 40 cm 30 cm 30° m2 50 g 75 g (a) What is the magnitude of F? (Ans: 6.21 N) (b) What are the reaction forces on the support? (Ans: R, = 5.38 N; Ry = 5.80 N) %3D
3. Two masses are attached to a uniform meter stick as shown in the figure below. The masses of m1 and m2 are as given and the meter stick weighs 150 g. A force F with unknown magnitude is applied on one end of the stick at an angle of 30° to balance the system. 30 cm 40 cm 30 cm 30° m2 50 g 75 g (a) What is the magnitude of F? (Ans: 6.21 N) (b) What are the reaction forces on the support? (Ans: R, = 5.38 N; Ry = 5.80 N) %3D
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PRACTICE &'PROBLEM-SOLVING EXERCISES (PPE) # 3:
THE EQUILIBRIUM MODEL
Copy and fill-out the header of the PPE for each page of your solution. Present neatly the
organized solutions to the following answered problems. Box the final answers. Copy and
sign the Thomasian Honor Code in the last page of your solution.
3. Two masses are attached to a uniform meter stick as shown in the figure below. The
masses of m1 and m2 are as given and the meter stick weighs 150 g. A force F with
unknown magnitude is applied on one end of the stick at an angle of 30° to balance
the system.
F.
30 cm
40 cm
30 cm
30°
m1
m2
50 g
75 g
(a) What is the magnitude of F? (Ans: 6.21 N)
(b) What are the reaction forces on the support? (Ans: R, = 5.38 N; Ry = 5.80 N)
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