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1.3 Mass and weight

1.3 Mass and weight. 1.3 Mass and weight. Core Show familiarity with the idea of the mass of a body State that weight is a force Demonstrate understanding that weights ( and hence masses) may be compared using a balance. 1.3 Mass and weight. Supplement

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1.3 Mass and weight

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  1. 1.3 Mass and weight

  2. 1.3 Mass and weight • Core • Show familiarity with the idea of the mass of a body • State that weight is a force • Demonstrateunderstandingthatweights(and hence masses) may be compared usinga balance

  3. 1.3 Mass and weight • Supplement • Demonstrate an understanding that mass is a property that ‘resists’ change in motion • Describe, and use the concept of, weight as the effect of a gravitational field on a mass

  4. Weight • Weight = mass x gravitationalfieldstrength • W = mg • What are theunits of g? • Weightistheeffect of a gravitationalfieldon a mass.

  5. Mass • Whatismass? • In Physicsmassis quite unusual – one of theaims of themostexpensivePhysicsexperimentever – the LHC at cernistofindtheparticleresponsibleforgivingmattermassitiscalledtheHigg`sboson

  6. Twotypes of mass? • Fromtheequation W=mg • We can see m = W/g • Thisisknown as thegravitationalmass • g isthegravitationalfieldstrength • Thismassiswhatisaffectedby a gravitationalfield.

  7. Theothermass • FromNewton`ssecondlaw • F=ma • m=F/a • Thisiscalledtheinertialmass • Thismassishowharditistochangeanobjectsmotion (accelerateit)

  8. To do • Answerquestionson p 43

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