Boilermakers OC2 01-12 Exam
Questions & Answers (Grade A+)
you are replacing a 1125 pound cast iron boiler tank. you must slide
the tank across a dry, wooden platform in the direction of the wood
grain. what is the friction force necessary to move the tank?
a. 168.75 lbs
b. 202.50 lbs
c. 213.75 lbs
d. 551.25 lbs -
correct answer ✅coefficient of friction, cast iron on dry
hardwood=0.49
(1125)(0.49)=551.25 lbs, d
match the method of applied force with the correct description
1. a pry bar is used to lift the corner of a 3000 lb crate so you can
attach a rigging point
2. a catapult is used to throw a 50 lb rock
3. an overhead pulley is used to raise a 200 lb crate from the
ground to a platform 6' in the air
a. the direction of the force is changed
b. the speed of the object being moved is increased
c. the force on the tool is multiplied -
correct answer ✅1. c
, Boilermakers OC2 01-12 Exam
Questions & Answers (Grade A+)
2. b
3. a
which scenario requires the greatest amount of power?
a. slide a 200 lb brass fitting 110' across a dry hardwood surface in 2
minutes
b. haul two vertically attached crates (165 lbs and 135 lbs) to a
height of 75' in 3 minutes using a frictionless single-fixed pulley
c. manually lift a 200 lb box to a height of 3' in 4 seconds
d. slide a 1000 lb steel container 54' across a dry steel surface in 45
seconds -
correct answer ✅c. manually lift a 200 lb box to a height of 3' in 4
seconds
what block opens on one side for installing the rope?
a. fiber rope block
b. head block
c. snatch block
d. wire rope block -
correct answer ✅c. snatch block
Questions & Answers (Grade A+)
you are replacing a 1125 pound cast iron boiler tank. you must slide
the tank across a dry, wooden platform in the direction of the wood
grain. what is the friction force necessary to move the tank?
a. 168.75 lbs
b. 202.50 lbs
c. 213.75 lbs
d. 551.25 lbs -
correct answer ✅coefficient of friction, cast iron on dry
hardwood=0.49
(1125)(0.49)=551.25 lbs, d
match the method of applied force with the correct description
1. a pry bar is used to lift the corner of a 3000 lb crate so you can
attach a rigging point
2. a catapult is used to throw a 50 lb rock
3. an overhead pulley is used to raise a 200 lb crate from the
ground to a platform 6' in the air
a. the direction of the force is changed
b. the speed of the object being moved is increased
c. the force on the tool is multiplied -
correct answer ✅1. c
, Boilermakers OC2 01-12 Exam
Questions & Answers (Grade A+)
2. b
3. a
which scenario requires the greatest amount of power?
a. slide a 200 lb brass fitting 110' across a dry hardwood surface in 2
minutes
b. haul two vertically attached crates (165 lbs and 135 lbs) to a
height of 75' in 3 minutes using a frictionless single-fixed pulley
c. manually lift a 200 lb box to a height of 3' in 4 seconds
d. slide a 1000 lb steel container 54' across a dry steel surface in 45
seconds -
correct answer ✅c. manually lift a 200 lb box to a height of 3' in 4
seconds
what block opens on one side for installing the rope?
a. fiber rope block
b. head block
c. snatch block
d. wire rope block -
correct answer ✅c. snatch block
