BMQ-1 a=120°/s 75° Vem = 0.2 m/s W = 30°/s 0.4 m An 80 kg man's leg [shank + foot] is shown in swing phase. Anthropometric data given with this question are applicable. The leg centre of mass has a velocity of 0.2 m/s at 75° to vertical as shown and is located 0.4 m above the ground. Its angular velocity is 30 degrees per second in the extension direction, and the angular acceleration is 120 degrees per second² in the flexion direction. Assume that the datum level for potential energy is the ground level. Greater trochanter 340 mm Femoral condyle 290 mm Med. & lat. malleolus 80 mm X i. What is the kinetic energy of the leg? ii. What is the potential energy of the leg? iii. If the thigh is stationary, describe and explain the likely behavior of the energy components of the leg over the next short period of time. iv. Assume the dimensions of the lower limb are as shown. What must be the net torque applied about the leg center of mass?
BMQ-1 a=120°/s 75° Vem = 0.2 m/s W = 30°/s 0.4 m An 80 kg man's leg [shank + foot] is shown in swing phase. Anthropometric data given with this question are applicable. The leg centre of mass has a velocity of 0.2 m/s at 75° to vertical as shown and is located 0.4 m above the ground. Its angular velocity is 30 degrees per second in the extension direction, and the angular acceleration is 120 degrees per second² in the flexion direction. Assume that the datum level for potential energy is the ground level. Greater trochanter 340 mm Femoral condyle 290 mm Med. & lat. malleolus 80 mm X i. What is the kinetic energy of the leg? ii. What is the potential energy of the leg? iii. If the thigh is stationary, describe and explain the likely behavior of the energy components of the leg over the next short period of time. iv. Assume the dimensions of the lower limb are as shown. What must be the net torque applied about the leg center of mass?
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
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Biomechanies Il
![BMQ-1
a=120°/s
75°
Vem = 0.2 m/s
W = 30°/s
0.4 m
An 80 kg man's leg [shank + foot] is shown in swing phase. Anthropometric data given with this
question are applicable. The leg centre of mass has a velocity of 0.2 m/s at 75° to vertical as
shown and is located 0.4 m above the ground. Its angular velocity is 30 degrees per second in the
extension direction, and the angular acceleration is 120 degrees per second² in the flexion
direction. Assume that the datum level for potential energy is the ground level.
Greater trochanter
340 mm
Femoral condyle
290 mm
Med. & lat. malleolus
80 mm
X
i. What is the kinetic energy of the leg?
ii. What is the potential energy of the leg?
iii. If the thigh is stationary, describe and explain the likely behavior of the energy components
of the leg over the next short period of time.
iv. Assume the dimensions of the lower limb are as shown. What must be the net torque applied
about the leg center of mass?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fa78cf17b-a235-4589-923c-577cbabfccac%2Fd1ef99b7-be50-4778-837d-5d7fea8ab5aa%2Fxpb1f13_processed.jpeg&w=3840&q=75)
Transcribed Image Text:BMQ-1
a=120°/s
75°
Vem = 0.2 m/s
W = 30°/s
0.4 m
An 80 kg man's leg [shank + foot] is shown in swing phase. Anthropometric data given with this
question are applicable. The leg centre of mass has a velocity of 0.2 m/s at 75° to vertical as
shown and is located 0.4 m above the ground. Its angular velocity is 30 degrees per second in the
extension direction, and the angular acceleration is 120 degrees per second² in the flexion
direction. Assume that the datum level for potential energy is the ground level.
Greater trochanter
340 mm
Femoral condyle
290 mm
Med. & lat. malleolus
80 mm
X
i. What is the kinetic energy of the leg?
ii. What is the potential energy of the leg?
iii. If the thigh is stationary, describe and explain the likely behavior of the energy components
of the leg over the next short period of time.
iv. Assume the dimensions of the lower limb are as shown. What must be the net torque applied
about the leg center of mass?
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