Answer:
a. 1715 N b. 2401 N
Explanation:
Let F = force due to calf muscle, F' = force due to tibia and N = force due to ground = weight of man = mg where m = mass of man = 70 kg and g = acceleration due to gravity = 9.8 m/s².
a. Magnitude of the forces exerted on the foot by the muscle
Since the force due to the calf muscle is 6.0 cm behind the ankle joint and the normal force due to the ground is 15.0 cm in front of the ankle joint and the force due to the tibia is at the ankle joint, taking moments about the ankle joint,
F × 6 cm + F' × 0 cm = N × 15 cm
6F = 15N = 15mg
F = 15mg/6
= 15 × 70 kg × 9.8 m/s²/6
= 1715 N
b. Magnitude of the forces exerted on the foot by the tibia
Taking moments about the calf muscle force, we have
F × 0 cm + F' × 6 cm = N × (15 cm + 6 cm)
6F' = 21N = 21mg
F' = 21mg/6
= 21 × 70 kg × 9.8 m/s²/6
= 2401 N
Answer:
Correct answer is (c) a global "repaving" that erased essentially all the surface features that had existed earlier
Explanation:
Venus underwent cyclic process which erased the proved of other craters about billion years back. This is termed Venus global resurfacing event.
Answer:
its point Y because the dot that represents Y is cose to s and can make a chan reaction
Answer:
baking and temperature
Explanation:
when baking you have to measure out ingredients to make sure they can go together and create the wanted outcome of flavor and texture
Temperature is a measurement of the weather and it can help us determine the clothes were going to wear and the activities we can and can not take part in