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5. If considering the moment of inertia of a body, it is convenient to assume as if all its mass were concentrated at a single point from the center of rotation. What is this distance called? (A) center of mass (B) center of gravity (C) lever arm (D) radius of gyration S. A uniform meterstick is supported at the 50 cm mark. A 25 N weight is placed at the 10 cm mark. Where should a 200 N weight be placed for the meterstick to be in equilibrium? (A) 1.25 cm mark (B) 5.0 cm mark (C) 51.25 cm mark (D) 55.0 cm mark . A wheel is rotating at an angular speed of 2.0 radians/s. How much torque is needed to accelerate it to 4.0 radians/s in 5 s? The wheel has a moment of inert of 0.25 kg•m2 (A) 0.01 Nm (B) 0.10 Nm (C) 1.0 Nm (D) 10 Nm

5. If considering the moment of inertia of a body, it is convenient to assume as if all its mass were concentrated at a single point from the center of rotation. What is this distance called? (A) center of mass (B) center of gravity (C) lever arm (D) radius of gyration S. A uniform meterstick is supported at the 50 cm mark. A 25 N weight is placed at the 10 cm mark. Where should a 200 N weight be placed for the meterstick to be in equilibrium? (A) 1.25 cm mark (B) 5.0 cm mark (C) 51.25 cm mark (D) 55.0 cm mark . A wheel is rotating at an angular speed of 2.0 radians/s. How much torque is needed to accelerate it to 4.0 radians/s in 5 s? The wheel has a moment of inert of 0.25 kg•m2 (A) 0.01 Nm (B) 0.10 Nm (C) 1.0 Nm (D) 10 Nm

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Please answer no. 5 ,6 and 7. Thank you so much. 

5. If considering the moment of inertia of a body, it is convenient to assume as if all its mass were concentrated at a single point from the center of rotation. What is this distance called? (A) center of mass (B) center of gravity (C) lever arm (D) radius of gyration 6. A uniform meterstick is supported at the 50 cm mark. A 25 N weight is placed at the 10 cm mark. Where should a 200 N weight be placed for the meterstick to be in equilibrium? (A) 1.25 cm mark (B) 5.0 cm mark (C) 51.25 cm mark (D) 55.0 cm mark 7. A wheel is rotating at an angular speed of 2.0 radians/s. How much torque is needed to accelerate it to 4.0 radians/s in 5 s? The wheel has a moment of inertia of 0.25 kg m2 (A) 0.01 Nm (B) 0.10 Nm (C) 1.0 Nm (D) 10 Nm
Transcribed Image Text:5. If considering the moment of inertia of a body, it is convenient to assume as if all its mass were concentrated at a single point from the center of rotation. What is this distance called? (A) center of mass (B) center of gravity (C) lever arm (D) radius of gyration 6. A uniform meterstick is supported at the 50 cm mark. A 25 N weight is placed at the 10 cm mark. Where should a 200 N weight be placed for the meterstick to be in equilibrium? (A) 1.25 cm mark (B) 5.0 cm mark (C) 51.25 cm mark (D) 55.0 cm mark 7. A wheel is rotating at an angular speed of 2.0 radians/s. How much torque is needed to accelerate it to 4.0 radians/s in 5 s? The wheel has a moment of inertia of 0.25 kg m2 (A) 0.01 Nm (B) 0.10 Nm (C) 1.0 Nm (D) 10 Nm
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