WorksheetsM2.2 Work and Machines
Total questions: 20
Worksheet time: 10mins
What is the unit of measurement for effort in the inclined plane formula?
Meters
Newtons
Kilograms
Liters
Which of the following is NOT a simple mechanical advantage device?
Lever
Pulley
Gear
Computer
What is the mechanical advantage of a lever if the effort arm is twice as long as the resistance arm?
0.5
2
1
4
What is the relationship between effort and resistance in a first class lever?
They are always equal
They act in the same direction
They act in opposite directions
They do not affect each other
What is a lever?
A rigid bar that turns about a fixed axis
A flexible rope used to lift objects
A wheel that rotates on an axle
A flat surface inclined at an angle
Which of the following is an example of a first-class lever?
Seesaw
Nutcracker
Fishing rod
Wheelbarrow
What is the formula used to calculate the effort required to lift a weight using a lever?
E × L = R × l
E + L = R + l
E - L = R - l
E / L = R / l
What happens when you increase the distance from the applied effort to the fulcrum in a first-class lever?
Increases the mechanical advantage
Decreases the mechanical advantage
Has no effect
Reverses the mechanical advantage
Which of the following is an example of a third-class lever?
Fishing rod
Seesaw
Wheelbarrow
Scissors
What is the unit of measurement for the resistance of the object in the inclined plane formula?
Meters
Newtons
Kilograms
Liters
What does "MA" stand for in the efficiency formula η = VRMA×100 ?
Mechanical Advantage
Maximum Acceleration
Minimum Area
Mass Amount
What type of lever is a wheelbarrow?
First-class lever
Second-class lever
Third-class lever
Fourth-class lever
What is the primary function of gears in a mechanical system?
To increase friction
To transmit torque
To change color
To reduce weight
What happens to the mechanical advantage when the length of the effort arm is decreased in a lever?
Becomes zero
Increases
Decreases
Remains the same
What is the main advantage of using planetary gear systems?
Simple design
High torque transmission
Low cost
Easy maintenance
In a second-class lever, where is the load positioned?
Between the fulcrum and the effort
At the effort
Outside the lever
At the fulcrum
Which type of gear is used to change the direction of rotation by 90 degrees?
Worm gear
Spur gear
Bevel gear
Helical gear
Which of the following is NOT an example of a first-class lever?
Crowbar
Claw hammer
Pliers
Bicycle
Which gear type is most suitable for transmitting motion between non-parallel and non-intersecting shafts?
Helical gear
Worm gear
Bevel gear
Spur gear
What is the position of the fulcrum in a third-class lever?
At the end
In the middle
At the resistance
At the effort
