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23 Nov 2019
A 0.7 kg mass at (x, y) = (20 cm,20 cm) and a 2.5 kg mass at (20cm,100 cm) are connected by a massless, rigid rod. They rotateaboutthe center of mass.
(a) What are the coordinates of the centerofmass?
( 1 cm, 2 cm)
(b) What is the moment of inertia about the center of mass?
3 kg·m2
(c) What constant torque will cause an angular velocity of6.25rad/s at the end of 3.0 s, starting from rest?
4 N·m
(d) At what angle, with respect to the axis of the rod, should2.0 Nforces be applied to each massto give the torque you found in partc?
5°
A 0.7 kg mass at (x, y) = (20 cm,20 cm) and a 2.5 kg mass at (20cm,100 cm) are connected by a massless, rigid rod. They rotateaboutthe center of mass.
(a) What are the coordinates of the centerofmass?
( 1 cm, 2 cm)
(b) What is the moment of inertia about the center of mass?
3 kg·m2
(c) What constant torque will cause an angular velocity of6.25rad/s at the end of 3.0 s, starting from rest?
4 N·m
(d) At what angle, with respect to the axis of the rod, should2.0 Nforces be applied to each massto give the torque you found in partc?
5°
( 1 cm, 2 cm)
(b) What is the moment of inertia about the center of mass?
3 kg·m2
(c) What constant torque will cause an angular velocity of6.25rad/s at the end of 3.0 s, starting from rest?
4 N·m
(d) At what angle, with respect to the axis of the rod, should2.0 Nforces be applied to each massto give the torque you found in partc?
5°
Lelia LubowitzLv2
29 Apr 2019
