Physics Solver

Use this physics solver to work through school and introductory college problems with formulas, units and clearly stated assumptions. Type a question or upload a readable photo or PDF, then review the reasoning one step at a time.

Tip: drag a photo here or paste a screenshot (Ctrl+V)

How are solve allowances used?

Math, physics, chemistry and all AI tools share your plan allowance.

Each successful standard AI submission uses one standard solve. Deep reasoning uses one deep solve instead. Both count toward the daily solve limit.

Photos and selected PDF pages also use one daily photo solve per submission. Uploading a file or selecting a page does not start a solve. PDF upload requires Plus or Pro.

Local calculations, worked examples, hints, copying answers and cached answers use no solves.

Technical failures return the reserved solve. An automatic retry is included in the same submission. A new successful AI submission counts again, even if it follows an earlier answer.

Step-by-step hints

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Topic tools

Worked example

Step-by-step solution

Find net force for a 2 kg mass accelerating at 3 m/s².

Step 1 / 3

Identify the quantities

The mass is 2 kg and the acceleration is 3 metres per second squared.

m=2\,\mathrm{kg},\quad a=3\,\mathrm{m/s^2}

How to work through a problem

State what is known, what you need to find and the units of every quantity.
Add a clear diagram or describe directions, connections and unreadable labels.
Choose a model, convert units consistently and follow the worked steps or reveal hints.
Check dimensions, signs and limiting cases against the original question.

Scope and assumptions

Choose the model before the formula

Start with a sketch, choose a positive direction and distinguish vector quantities from scalar quantities. A free-body diagram helps identify the net force; a circuit diagram helps identify voltage across the same component as the current through it.

This hub focuses on Newtonian mechanics and simple ohmic circuits. Constant acceleration, negligible friction or fixed resistance are assumptions to state, not facts to infer from a missing label.

Using the Physics Solver to connect diagrams, units and equations

Physics solver inputs and physical models

A useful input to this physics solver begins with a system, a requested unknown and a list of supplied quantities. Describe the object or circuit being analysed, the relevant time interval and the meaning of each symbol. Select a reference direction for vector components. A diagram may establish force directions or circuit connections, but a picture without a readable scale is not an exact numerical measurement. Supply unclear labels in text. This hub focuses on school and introductory college models, so state any simplification such as constant acceleration, negligible friction or an ohmic resistor.

When using this physics solver, choose equations after identifying those assumptions. Newton’s second law connects net force to acceleration; kinematic relations connect motion quantities under a stated model; energy relations connect transfers or changes. These statements are related but not interchangeable. An applied force is not automatically a net force, average speed is not automatically average velocity, and energy is not power. The topic tools help organise a question around the quantity it requests. If information is missing, identify which additional quantity or condition would make the calculation determinate instead of assigning an invented value.

Physics solver example: force, motion and energy

Take a constant-mass 2 kg cart initially at rest. A constant 6 N force acts right while a constant 2 N opposing force acts left for 3 s. Choose right as positive and assume this is the complete horizontal force model. Net force is 4 N, so acceleration is 2 m/s². With constant acceleration, final velocity is 6 m/s and displacement is one half times 2 times 3 squared, or 9 m. These motion results depend on the stated duration and initial rest condition as well as the force data.

The same example can be checked through work and energy. The applied force does 6 times 9 = 54 J of work. The opposing force does -2 times 9 = -18 J. Net work is therefore 36 J. Final kinetic energy is one half times 2 times 6 squared, also 36 J, and initial kinetic energy was zero. This agreement checks the arithmetic and model consistency. It does not justify ignoring an omitted force or using the same constant-acceleration equations in a different question where acceleration changes with time.

Physics solver units in mechanics and circuits

Convert measurements consistently before substitution. Mass in kilograms and acceleration in metres per second squared give force in newtons; force times displacement gives joules when the parallel component is used; joules divided by seconds give watts. Cubic volume conversions need special care: one cubic centimetre is one millionth of a cubic metre. This is why 1 g/cm³ corresponds to 1000 kg/m³. Keep an explicit unit on each known quantity and on the final result. A matching number with the wrong dimension does not answer the physical question.

For a separate circuit example, an ohmic 6 Ω resistor has a steady 12 V across it. Current through that resistor is 12 divided by 6, or 2 A. Electrical power transferred to it is voltage times current, giving 24 W. Over 5 s of constant power, the transferred energy is 120 J. The voltage must be across the same component whose current is being used. A supply’s total voltage is not automatically the voltage of each resistor in an unspecified network, and a nonlinear component may not have constant resistance.

Physics solver review: signs, roots and scope

A signed answer needs a direction convention. Negative velocity, acceleration or work can be physically meaningful, while negative ordinary mass or a negative elapsed interval in a forward-time measurement indicates an input problem. Distinguish vector components from magnitudes and instantaneous quantities from interval averages. When a motion equation has two positive time roots, the object may reach the same position twice; additional interval information may select one, but the other should not disappear without explanation. A quick limiting-case check can help: zero net force gives zero acceleration for positive constant mass.

These physics solver checks organise learning, but they do not independently certify an AI response. Read whether the transformations follow from the given quantities, confirm the units and compare the final interpretation with the original diagram. Real measurements also require justified rounding, and more advanced regimes may require models beyond the introductory formulas shown here. A clear text question, photograph or PDF can provide context, but unreadable data should remain a clarification request. Use worked steps or gradual hints to follow the calculation at your own pace. AI tools share your existing account allowance; a new standard or deep solve counts against its corresponding solve limit.

Common questions

What physics topics are covered?

The starter tools cover net force, average acceleration, classical translational kinetic energy and Ohm’s law for school and introductory college study.

Can I upload a physics diagram?

Use a clear photo or PDF with visible labels. Describe any missing directions, scales or component connections in text; an unclear figure needs clarification.

How should I handle units?

Include units in the input, convert consistently and check the dimensions of the final answer. State significant-figure requirements from your course.

Are these results suitable for engineering design?

The examples are educational model calculations. Real designs require measured conditions, applicable standards and independent validation.