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FISIKA DASAR

FISIKA DASAR. By: Mohammad Faizun , S.T., M.Eng . Head of Manufacture System Laboratory Mechanical Engineering Department Universitas Islam Indonesia. MOTION ( Gerak )? Gerak adalah proses berpindahnya suatu objek . Berpindah berarti posisi relatifnya berubah .

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FISIKA DASAR

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  1. FISIKA DASAR By: Mohammad Faizun, S.T., M.Eng. Head of Manufacture System Laboratory Mechanical Engineering Department Universitas Islam Indonesia

  2. MOTION (Gerak)? Gerakadalahprosesberpindahnyasuatuobjek. Berpindahberartiposisirelatifnyaberubah. Dari gambardiatas, sebutkanbenda-bendamanasaja yang bergerak! Jelaskan!

  3. Kinds of motion: • according to the path of objects • linear motion (translational motion) • circular motion • elliptic motion • projectile motion • 2. according to the speed of objects • uniform motion • the object moves in constant speed • non uniform motion: speeding up and slowing down.

  4. Straight motion Straight motion Projectile motion Circular motion elliptical motion

  5. LINEAR UNIFORM MOTIONDIMENSION 1 (Straight Line) • Motion in straight path with constant velocity = velocity (m/s) displacement (m) Δt= time span (s) Make the position vs time graph if the constant velocity is 20 m/s!

  6. Negative direction Make the position vs time graph if the constant velocity is -20 m/s!

  7. B A 240 km • EXERCISE (PR disubmitsenen 26 September 2011) (Motion in straight path with constant velocity) • A car moves forward in straight path 100 meters long. The speed is 10 m/s. Find the time needed by the car! • A bus moves in straight way with velocity 120 km/h. Please convert the speed into m/s! • The motorcycle goes form A at 07.00 with speed 90 km/h, the ambulance goes from B at 7.30 with speed 100 km/h. Determine the place where they meet and what is the time?

  8. Sebuahbendamungkinbergerakdengangrafiksepertidibawah. Tentukan: a. kecepatanbendatersebut! b. Posisibendatersebutpada 20 detikpertama! c. tentukanjarak yang ditempuhselama 20 detik! s (m) s (m) 50 t (s) 10 t (s) 10 -25 A B

  9. Sebuahbendamungkinbergerakdengangrafiksepertidibawah. Tentukan: a. kecepatanbendatersebut! b. Posisibendatersebutpada 20 detikpertama! c. tentukanjarak yang ditempuhselama 20 detik! s (m) s (m) 50 50 t (s) 10 t (s) A B

  10. Motion in straight path with constant acceleration = acceleration (m/s2)

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