If you pull with your lower leg such that you exert a 90 N force on the cord attached to your ankle, determine the magnitude of the tension force of your hamstring on your leg and the compression force at the knee joint.

This question is incomplete, the missing diagram is uploaded along this answer below.

- the magnitude of the tension force exerted by the hamstring muscles on the leg is 990 N

- the magnitude of compression force at the knee joint is 900 N

Explanation:

Given the data in the question and diagram below;

Net torque = 0

Torque = force × lever arm

so

F  × ( 15.0 in + 1.5 in ) = T × 1.5 in

given that F = 90 N

90 × ( 15.0 in + 1.5 in ) = T × 1.5 in

90 N × 16.5 in =  T × 1.5 in

T = ( 90 N × 16.5 in ) / 1.5 in

T = 990 N

Therefore, the magnitude of the tension force exerted by the hamstring muscles on the leg is 990 N

b) magnitude of compression force at the knee joint;

In equilibrium, net force = 0

along horizontal

F - T + F = 0

we substitute

F - 990 + 90 = 0

F - 900 = 0

F = 900 N

Therefore, the magnitude of compression force at the knee joint is 900 N

answer: strength i guess

explanation: