ROTATIONAL MOTION

What happens to the mechanical advantage if the effort arm is shorter than the load arm?

• It becomes greater than one
• It remains one
• It becomes infinite
• It becomes less than one

How is the mechanical advantage of a lever defined in terms of forces?

• F₂/F₁
• d₁/d₂
• d₂/d₁
• F₁/F₂

What is the mechanical advantage of a lever when the effort arm is twice the load arm?

• 0.5
• 1
• 1.5
• 2

What is the condition for rotational equilibrium in a lever?

• F₁ = F₂
• d₁ = d₂
• F₁ + F₂ = 0
• d₁F₁ = d₂F₂

In a lever system, what is the reaction force at the fulcrum equal to?

• Difference between load and effort
• Effort only
• Load only
• Sum of the load and effort