Work, GPE & KE
2 guided lessons · 18 checks · 4. Energy Resources and Energy Transfers → Work, Power & Energy Resources
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Lesson 1 of 2
Conservation links work, GPE and KE
Energy never appears from nowhere. When a force works over a distance it moves energy mechanically between stores, and conservation of energy insists the books balance: what leaves one store arrives in another, with the work done as the receipt.
What you know already
Real machines shuttle energy between stores: a thrown ball trades gravitational potential for kinetic and back again. These lessons connect work, GPE and KE through conservation of energy, then practise the perfect-transfer sums that exam questions reward.
Key points of understanding
- GPE names the gravitational potential store and KE names the kinetic store.
- Mechanical work is the transfer route: a force acting over a distance moves energy between stores.
- Conservation of energy keeps the total constant, so the energy transferred equals the work done.
- Pendulum swings shuttle energy back and forth between the kinetic and gravitational stores.
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1.Conservation links work, GPE and KE
Energy never appears from nowhere. When a force works over a distance it moves energy mechanically between stores, and conservation of energy insists the books balance: what leaves one store arrives in another, with the work done as the receipt.
Key points
- GPE names the gravitational potential store and KE names the kinetic store.
- Mechanical work is the transfer route: a force acting over a distance moves energy between stores.
- Conservation of energy keeps the total constant, so the energy transferred equals the work done.
- Pendulum swings shuttle energy back and forth between the kinetic and gravitational stores.
First pass
Two vaults, gravitational and kinetic, with work done as the courier between them. Nothing is minted or destroyed in transit — the courier's manifest (joules of work) matches the deposits and withdrawals exactly.
Guided content from the SME authoring corpus — note rn_p3SDZQRDzPCYhztZ, pinned at c40b8b284935 · promoted SyllabAI/syllabai-resources b3caaaa90c5e
