Consider a rotating 10 kg body for which k = 0.25 m and w = 3 rad/s. What is the effect on the body's angular momentum if the mass of the body doubles?
H stays the same H doubles H quadruples H halves
A 50 kg diver is positioned so that his radius of gyration is 0.5 m as he leaves the board with an angular velocity of 5 rad/s. What is the diver's angular velocity when he assumes a tuck position, altering his radius of gyration to 0.25 m?
5 rad/s 10 rad/s 15 rad/s 20 rad/s
The knee extensors insert on the tibia at an angle of 30 degrees at a distance of 4cm from the axis of rotation at the knee. How much force must the knee extensors exert to produce an angular acceleration at the knee of 2 rad/s2, given a mass of the lower leg and foot of 5 kg and k=25cm?
31.25 N 42.45 N 21.45 N 18.25 N
Consider a rotating 10 kg body for which k = 0.25 m and w = 3 rad/s. What is the effect on the body's angular momentum if the mass of the body doubles? H stays the same H doubles H quadruples H halves A 50 kg diver is positioned so that his radius of gyration is 0.5 m as he leaves the board with an angular velocity of 5 rad/s. What is the diver's angular velocity when he assumes a tuck position, altering his radius of gyration to 0.25 m? 5 rad/s 10 rad/s 15 rad/s 20 rad/s The knee extensors insert on the tibia at an angle of 30 degrees at a distance of 4cm from the axis of rotation at the knee. How much force must the knee extensors exert to produce an angular acceleration at the knee of 2 rad/s2, given a mass of the lower leg and foot of 5 kg and k=25cm? 31.25 N 42.45 N 21.45 N 18.25 N
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QUESTION 4
Consider a rotating 10 kg body for which k = 0.25 m and w = 3 rad/s. What is the effect on the body's angular momentum if the mass of the body doubles?
H stays the same
H doubles
H quadruples
H halves
A 50 kg diver is positioned so that his radius of gyration is 0.5 m as he leaves the board with an angular velocity of 5 rad/s. What is the diver's angular velocity when he assumes a tuck position, altering his radius of gyration to 0.25 m?
5 rad/s
10 rad/s
15 rad/s
20 rad/s
The knee extensors insert on the tibia at an angle of 30 degrees at a distance of 4cm from the axis of rotation at the knee. How much force must the knee extensors exert to produce an angular acceleration at the knee of 2 rad/s2, given a mass of the lower leg and foot of 5 kg and k=25cm?
31.25 N
42.45 N
21.45 N
18.25 N
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