ROTATIONAL MOTION

What is the role of the angle α₁ in torque expression?

• It measures angular displacement
• It determines tangential speed
• It determines the perpendicular component of force
• It defines linear acceleration

What is the direction of angular velocity vector?

• Tangential to path
• Radial
• Along the axis of rotation
• Perpendicular to axis

What is the work done when force is radial?

• Maximum
• Negative
• Zero
• Depends on mass

What is the effect of increasing the radius on torque for a given force?

• Torque decreases
• Torque remains same
• Torque increases proportionally
• Torque becomes zero

What is the significance of the plane perpendicular to the axis of rotation?

• It contains axial forces
• It is irrelevant
• Forces in this plane can produce torque about the axis
• It reduces moment of inertia