To draw the force vectors F1 and F2, first define their magnitudes and angles: F1 is 100 at 20 degrees and F2 is 200 at 30 degrees. Establish a coordinate system, typically the x-y axis. For F1, calculate its components as F1 = (100cos20, 100sin20) and plot the point accordingly. Repeat the process for F2 to visualize both vectors as arrows originating from the origin.
#1
rasikan
21
0
Homework Statement
F1Cosx and F2CosX2 and
F1Sinx and F2Sinx2
I need to draw each force vector as an arrow ?
how do I do that?
Well, pick a coordinate system (say the x-y axis). Then the force F1=(100cos20, 100sin20). Since these are just numbers, you can plot the point (100cos20, 100sin20). Join this point to the origin, and you have your force vector. Similarly for F2
TL;DR Summary: I came across this question from a Sri Lankan A-level textbook.
Question - An ice cube with a length of 10 cm is immersed in water at 0 °C. An observer observes the ice cube from the water, and it seems to be 7.75 cm long. If the refractive index of water is 4/3, find the height of the ice cube immersed in the water.
I could not understand how the apparent height of the ice cube in the water depends on the height of the ice cube immersed in the water. Does anyone have an...
Starting with the mass considerations #m(t)# is mass of water #M_{c}# mass of container and #M(t)# mass of total system
$$M(t) = M_{C} + m(t)$$
$$\Rightarrow \frac{dM(t)}{dt} = \frac{dm(t)}{dt}$$
$$P_i = Mv + u \, dm$$
$$P_f = (M + dm)(v + dv)$$
$$\Delta P = M \, dv + (v - u) \, dm$$
$$F = \frac{dP}{dt} = M \frac{dv}{dt} + (v - u) \frac{dm}{dt}$$
$$F = u \frac{dm}{dt} = \rho A u^2$$
from conservation of momentum , the cannon recoils with the same force which it applies.
$$\quad \frac{dm}{dt}...