Define gravitational field strength (g) as the force of gravity acting on a unit mass; recall and apply the equation W = mg, noting that near Earth's surface, g is about 9.8 N/kg.

Quick explanation

Define gravitational field strength (g) as the force of gravity acting on a unit mass; recall and apply the equation W = mg, noting that near Earth's surface, g is about 9.8 N/kg

• This point belongs to Mass and weight, especially Mass and weight outcomes.
• You need to be able to define gravitational field strength (g) as the force of gravity acting on a unit mass; recall and apply the equation W = mg, noting that near Earth's surface, g is about 9.8 N/kg.
• The key ideas to know are Define and Determine.
• Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.