ROTATIONAL MOTION Quiz

• Net force is zero
• Only F1 = 0
• Net torque about any point is zero
• N = W

• Weight W
• Normal force N
• Friction F
• Force F1 from the wall

• N decreases with length
• N is unaffected
• N equals W, so it increases with ladder mass
• N becomes zero

• It makes the ladder stable
• It reduces weight
• It allows use of Pythagoras theorem to find BC
• It increases friction

• F = mv and τ = Iω
• F = p and τ = L
• F = ma and τ = Iα
• F = E and τ = K