Work & Energy

NXT Servo motorNXT Servo motor

NXT motorNXT motor

l l• Power levels 0-100• PWM (Pulse Width M d l ti )Modulation)

• 9 Volt geared motor150 ( diti• 150 rpm ( condition: no load)+/ 1 degree (accuracy)• +/- 1 degree (accuracy)

• 3 ~ 4 hours (full batteries)batteries)

• 3 motors• built in Rotation sensor• built-in Rotation sensor.

MotorMotor

magnetmagnet

GeneratorGenerator

Motor vs GeneratorMotor vs Generator

RadioComputerLanternLantern

Movie clipMovie clip

• 간단한 모터 만들기(w)• Magnetic field viewer (W)Magnetic field viewer (W)• Simple magnetic motor (W)• World simplest motor (W)• Simple Generator (W)• Simple Generator (W)

ForceForce힘 물체의 모양이나 운동 상태를 변화시크는 원인• 힘: 물체의 모양이나 운동 상태를 변화시크는 원인

• 힘: 힘의 작용점, 힘의 크기, 힘의 방향• 탄성력/ 마찰력/ 자기력/ 전기력/ 중력El ti / f i ti l/ ti / l t i l/ it f• Elastic/ frictional/ magnetic/ electrical/ gravity force

elastic forcefrictional forcefrictional forcegravity forcemagnetic forcemagnetic forceelectrical force

Window of mind

eyeeye

Chemistry of Toilet

•Toilet•Toilet roll•Toilet roll•DungU i•Urine

•Face washing•Waterwoks•SoapSoap•Toothpaste•Slippers•Slippers•Bucketh•shampoo

마인드스톰 시간 (U0321)