ROTATIONAL MOTION

What is the effect of increasing the radius on the tangential velocity of a particle?

• It decreases
• It remains constant
• Tangential velocity increases proportionally
• It becomes zero

Why is the origin O used in defining OP₁ if only CP₁ matters for torque?

• It is irrelevant
• It measures force
• O helps define the full position vector, but only the perpendicular component contributes to torque
• It defines angular speed

What is the significance of the angle φ₁ in the work formula?

• It measures angular acceleration
• It defines radius
• It is the angle between the force and the tangential direction
• It gives mass

What is the direction of the torque vector τ₁ = CP₁ × F₁?

• Radial direction
• Tangential direction
• Along the z-axis
• Opposite to velocity

What is the relationship between linear velocity v and angular velocity ω for a rotating particle?

• v = ω/r
• v = r²ω
• v = dθ/dt
• v = rω