匀速圆周运动
scene editor_circular_motion {
support center
body ball mass=0.5kg
circular-motion ball around center radius=2m speed=4m/s direction=counterclockwise start=20deg
show velocity force
drive ball phase=period playback=4s
}案例
从一个现成模型开始
选择一个接近的场景，在 Studio 中修改参数、连接和运动条件。
力学
7 个模型复合滑轮
scene editor_pulley {
support ceiling
body load mass=20kg
pulley M attached to load
pulley F fixed to ceiling
rope R path anchor(ceiling) -> around(M) -> around(F) -> handle
place load at y=0.76
place R.free at y=0.52
show displacement mechanical_advantage force_diagram
drive R.free displacement=1m duration=2s
}斜面无滑动滚动
scene editor_rolling {
surface ramp type=incline angle=18deg friction=static mu_static=0.25
body ball shape=solid_sphere radius=5cm mass=1kg
roll ball on ramp without_slipping
show motion_track force_diagram
drive ball displacement=1m
}斜面滚动滑移
scene editor_rolling_slip {
surface ramp type=incline angle=30deg friction=static mu_static=0.1 mu_kinetic=0.08
body ball shape=solid_sphere radius=5cm mass=1kg
roll ball on ramp with_slipping
show motion_track force_diagram
drive ball displacement=1m playback=3s
}阻尼振子
scene editor_oscillator {
support ceiling
body weight mass=1kg
spring S stiffness=16N/m displacement=0.25m
damper C coefficient=2kg/s
attach S.start to ceiling
attach S.end to weight.top
attach C.start to ceiling
attach C.end to weight.top
show force
drive weight phase=decay playback=5s
}粗糙面碰撞
scene editor_kinetic_friction_impact {
surface track type=horizontal friction=kinetic mu_kinetic=0.1
body A mass=1kg width=0.4m x=-1m velocity=3m/s on=track
body B mass=2kg width=0.4m x=1m velocity=0m/s on=track
impact A with B restitution=0.8 axis=horizontal
show force
drive A phase=impact playback=3s
}杠杆静力平衡
scene editor_lever {
support fulcrum
rod beam length=4m
pivot beam on fulcrum position=1m
force load on beam position=0m direction=down magnitude=600N
force effort on beam position=4m direction=down magnitude=F
show force torque equilibrium reaction
}电与磁
4 个模型交叉电磁场速度选择器
scene editor_velocity_selector {
particle electron charge=-1e
field E kind=uniform_electric magnitude=20kV/m direction=down
field B kind=uniform_magnetic magnitude=10mT direction=into_page
velocity-selector electron through E and B velocity=right length=20cm
show velocity electric_force magnetic_force
drive electron phase=transit playback=3s
}带电粒子在匀强磁场中运动
scene editor_magnetic_orbit {
particle ion mass=2kg charge=3C speed=4m/s
field B kind=uniform_magnetic magnitude=0.5T direction=into_page
lorentz ion in B velocity=right
show velocity force radius period
drive ion phase=period playback=4s
}法拉第电磁感应
scene editor_faraday_induction {
coil C turns=200 radius=4cm resistance=8ohm
magnet M dipole_moment=0.8A*m2
induction C by M axis=axial distance=20cm
drive M displacement=-8cm duration=2s playback=3s
}直流电流示意
scene editor_dc_current {
battery source voltage=9V
resistor R resistance=100ohm
wire source.positive to R.a
wire R.b to source.negative
show current voltage
drive source phase=current_flow playback=3s
}光与波
5 个模型光电效应的能量与逸出
scene editor_photoelectric_emission {
particle photon energy=4.5eV
body metal material=sodium
particle electron
photoelectric-effect photon on metal releases electron workfunction=2.3eV angle=35deg
show energy velocity
drive electron phase=emission displacement=10nm playback=3s
}传播中的电磁波
scene editor_wave {
light-source spark frequency=50MHz
detector loop
field EM kind=electromagnetic
wave radio field=EM wavelength=6m phase=30deg
propagate radio from spark to loop
drive radio phase=period playback=2s
}薄透镜成像
scene editor_thin_lens {
object candle height=4cm
lens L type=converging focal_length=10cm
image candle through L object_distance=30cm
show principal_rays image_distance magnification
drive candle object_distance=15cm duration=3s
}反射、折射与全反射
scene editor_refraction {
light-source laser color=red
medium air refractive_index=1
medium glass refractive_index=1.5
refract laser from air into glass incidence_angle=20deg
show normal angles
drive laser incidence_angle=60deg duration=3s
}平面镜反射定律
scene editor_plane_mirror {
light-source laser color=red
mirror M
reflect laser from M incidence_angle=20deg
show normal angles
drive laser incidence_angle=65deg duration=3s
}