ROTATIONAL MOTION Quiz

• Στi = 0
• ΣFi = 0
• ΣLi = 0
• Σvi = 0

• The total torque is zero
• The total force on the body is zero
• The angular momentum is zero
• The body is at rest

• Only linear momentum is constant
• Only angular momentum is constant
• Velocity is zero
• Both linear and angular momentum remain constant

• When no external force acts
• When no external torque acts on it
• When velocity is constant
• When the path is circular

• Along the direction of r
• Along the direction of v
• Opposite to v
• Perpendicular to the plane of r and v