我想問吓點樣根據 v-t graph o黎畫 f - t graph???????
v - t graph (速度 - 時間 關係圖)
f - t graph (淨力 - 時間 關係圖)
F-T graph @ 力學
2007-04-01 1:09 am
回答 (2)
2007-04-01 2:55 am
✔ 最佳答案
因為dv/dt=a咁即係話a-t graph ge acceleration就係v - t graph ge slope
而f=ma,即係 f is directly proportional to a,所以照畫就ok,但係d數據就記得乘番個mass
2007-04-01 2:15 am
1. V-t graph, when v = constant. Then F-t graph, F=0
2. V-t graph, when v increase with constant acceleration. Then F-t graph, F is constant but not equal to zero
(because F = ma, if constant Net force applied on the object, the object will move with constant acceleration and velocity increasing)
3. V-t graph, when v increase with increasing acceleration. Then F-t graph, F is also increasing.
(Because in F=ma, F will increase when a increasing)
2. V-t graph, when v increase with constant acceleration. Then F-t graph, F is constant but not equal to zero
(because F = ma, if constant Net force applied on the object, the object will move with constant acceleration and velocity increasing)
3. V-t graph, when v increase with increasing acceleration. Then F-t graph, F is also increasing.
(Because in F=ma, F will increase when a increasing)
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