A breaker bar's longer length increases what quantity when applying the same force?

A breaker bar's longer length increases what quantity when applying the same force?

• A. Speed
• B. Mass
• C. Torque
• D. Temperature

Answer: (C)

Torque is the twisting force you generate, and it depends on two things: how hard you push and how far from the fulcrum you push, i.e., the lever arm. When you use a breaker bar, lengthening the handle increases that lever arm. With the same amount of force from your hand, a longer bar multiplies that force into a greater torque, so you get more twisting effort on the fastener. That’s why a longer breaker bar makes it easier to loosen tightly tightened bolts. The other options don’t describe what changes with a longer handle. Speed isn’t directly increased by lengthening the bar; mass isn’t altered by applying force in this context, and temperature isn’t an immediate effect of bar length alone.

Torque is the twisting force you generate, and it depends on two things: how hard you push and how far from the fulcrum you push, i.e., the lever arm. When you use a breaker bar, lengthening the handle increases that lever arm. With the same amount of force from your hand, a longer bar multiplies that force into a greater torque, so you get more twisting effort on the fastener. That’s why a longer breaker bar makes it easier to loosen tightly tightened bolts.

The other options don’t describe what changes with a longer handle. Speed isn’t directly increased by lengthening the bar; mass isn’t altered by applying force in this context, and temperature isn’t an immediate effect of bar length alone.