What are the two main categories of energy?

Kinetic energy and potential energy

Thermal energy and chemical energy

Electrical energy and nuclear energy

What happens to potential energy when the input of kinetic energy ceases?

It tries to bring the mass back down to the ground

It transforms into thermal energy

How is power calculated?

By multiplying work done by time

By subtracting time from work done

What does the law of conservation of energy state?

Energy can only be transformed from one form to another.

Energy can be created and destroyed.

Energy is always lost in mechanical processes.

Energy is only used in mechanical systems.

How is the efficiency of a mechanical system calculated?

The ratio of useful output energy to total input energy.

The product of input power and output power.

The difference between total input energy and useful output energy.

The sum of useful output energy and total input energy.

What happens if there is too much torque applied to a bolt or screw?

It may break the thread or snap the object

It will make the object heavier

According to the principle of action and reaction, what happens when your weight pushes down on the floor?

The floor pushes up against you with an equal force

What happens to an object when a pivot is placed under its centre of gravity?

The object becomes unstable and falls.

The object moves in a circular motion.

What is the centre of gravity?

The point where the weight of an object is concentrated.

The point where an object is heaviest.

The point where an object is lightest.

The point where an object is most colorful.

What should be done when lifting or manually handling objects to make them easier to carry?

Support them under the centre of gravity.

The speed of something in a given direction, measured in metres per second (m/s).

The distance traveled by an object.

The force applied to an object.

What does the ratio express in mechanical science?

The relationship between two groups or amounts that expresses how much bigger one is than the other.

The speed of an object in a given direction.

The distance traveled by an object.

In a Class 3 lever, where is the force located?

Between the load and the fulcrum

On the opposite side of the fulcrum from the load

In a Class 3 lever, where is the force located?

Between the load and the fulcrum

On the opposite side of the load

How does a pulley provide a mechanical advantage?

By reducing the force needed to lift an object

By increasing the weight of the object

By increasing the speed of lifting

By decreasing the height of the lift

What is the primary function of a screw in mechanical systems?

To convert rotational motion to linear motion

To convert linear motion to rotational motion

What is the primary function of a screw in mechanical science?

To convert rotational motion to linear motion

To convert linear motion to rotational motion

To convert electrical energy to mechanical energy

To convert thermal energy to mechanical energy

t-level year 1 unit 2.4 mechanical advantage

Quiz

•

Construction

•

11th Grade

•

Practice Problem

•

Hard

Trevor Armstrong

FREE Resource

work = mass / gravity / distance

work = mass - gravity - distance

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t-level year 1 unit 2.4 mechanical advantage

50 questions

What is the relationship between mass and weight according to Newton's second law?

What does the symbol 'g' represent in the equation W = mg?

On Earth, what is the approximate value of acceleration due to gravity?

In the equation F = ma, what does 'a' stand for?

What is the formula for calculating work when force and distance are known?

Which unit is used to measure mechanical work?

What is the formula for work when mass, gravity, and distance are considered?

Which of the following units is used to measure electrical energy?

The kilowatt hour (kWh) is the standard unit for measuring electrical energy, representing the amount of energy consumed when using one kilowatt of power for one hour. Other options measure different forms of energy.

What are the two main categories of energy?

What type of energy is described as the energy an object has due to its motion?

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