Keywords: Torque – Force – Fulcrum – Lever arm – Rotational motion

Objective: To determine the effect of the shape and weight of an object on the distance it travels when rolling.Materials: Ball – Pencil – Paper cylinder – Clay piece – Adhesive tape – Ramp (inclined cardboard) – Ruler or measuring tape – Table for recording results.Steps: Place the ramp in a fixed......

Keywords: Wheel – Axle – Simple machines – Rotation – Force

Keywords: Translational equilibrium – Rotational equilibrium – Torque – Forces – Motion

Coefficient of frictioncoefficient of friction – force – motion – surfaces – friction

static friction and sliding friction

How do pulleys help you lift things?

Keywords: Rotational equilibrium – Torque – Force – Axis of rotation – Balance

Proving the law of levers by using spring balanceKeywords (English): lever law – spring balance – force – arm – fulcrum

Keywords: Free fall – Gravity – Acceleration – Time – Motion

Keywords: Lever law – Force – Arm – Fulcrum

Keywords: Friction – Motion – Surfaces – Force – Resistance

Keywords: Water resistance – Air resistance – Motion – Drag – Friction

Keywords: Air resistance – Falling – Speed – Friction – Motion

Unit One: Forces and Motion.Lesson One: types of levers.Objective of the experiment:To identify to the third class leversExperiment tools:holder - tweezers - fishing rod - broom - golf clubExperiment steps:- Use each lever in its correct position.- We note that each lever that was used is a thi......

Unit One: Forces and Motion.Lesson One: types of levers.Objective of the experiment:To identify to the second class leversExperiment tools:nutcracker - bottle opener  - Paper stapler - wheelbarrowExperiment steps:- Use each lever in its correct position.- We note that each lever that was u......

Unit One: Forces and Motion.Lesson One: types of levers.Objective of the experiment:To identify to the first class leversExperiment tools:pliers - pincers - scissors - water pump - nail clippers - hammer - crowbar and rock - balance scaleExperiment steps:- Use each lever in its correct position......

Objective of the experiment:To compare the friction between different solid bodiesExperiment tools:Two balls - Golf stick - Smooth road - Sandy roadExperiment steps:- Put each ball at the starting point of each path.- Hit each ball with the stick in each different way and note the movement of each b......

Keywords: Tensile force – Spring – Extension – Hooke’s law – Elastic force

Objective: Investigate the effect of static electricity generated by friction on the movement of objects, and understand how forces can keep a light object in the air without touching it.Materials: Dry cloth – two foam platesProcedure: Place one foam plate on a flat surface. Rub the cloth on the fir......

Objective: To determine the center of gravity of a regular-shaped object (such as a triangular lamina) and to verify that the center of gravity lies at the intersection point of the vertical lines drawn using a plumb line.Materials: Regular flat lamina – a nail fixed in a base – plumb line (nylon th......

Keywords: Rolling – Stability – Motion – Friction – Speed

Keywords: Strong structure – Supports – Balance – Forces – Stability