In the figure, the horizontal lower arm has a mass of 2.8 kg and its center of gravity is 12 cm from the elbow joint pivot. How much force FM must the vertical extensor muscle in the upper arm exert on the lower arm to hold a 7.5 kg shot put?
A) 100 N
B) 500 N
C) 750 N
D) 1000 N
E) 1500 N

Question

In the figure, the horizontal lower arm has a mass of 2.8 kg and its center of gravity is 12 cm from the elbow joint pivot. How much force FM must the vertical extensor muscle in the upper arm exert on the lower arm to hold a 7.5 kg shot put? 
A) 100 N 
B) 500 N 
C) 750 N 
D) 1000 N 
E) 1500 N

Quizplus · Accepted Answer

The Answer of In the figure, the horizontal lower arm has a mass of 2.8 kg and its center of gravity is 12 cm from the elbow joint pivot. How much force FM must the vertical extensor muscle in the upper arm exert on the lower arm to hold a 7.5 kg shot put? 
A) 100 N 
B) 500 N 
C) 750 N 
D) 1000 N 
E) 1500 N

In the Figure, the Horizontal Lower Arm Has a Mass