Calculate the cross product. Give magnitude and direction in each case. r righta

Question

Calculate the cross product. Give magnitude and direction in each case. r rightarrow = (0.5 m) x rightarrow , and F rightarrow = (-10 N) y rightarrow. Calculate r rightarrow = r rightarrow x F rightarrow. Give magnitude and direction of r rightarrow. p rightarrow = (10 kg o m/s) and r rightarrow = (-10 m) + (1 m) . Calculate L rightarrow = r rightarrow x p rightarrow. Give magnitude and direction of L rightarrow. The diagram on the right shows the force F rightarrow being applied at displacement r rightarrow from axis of rotation. The magnitude of force is 50 N and the distance r is 0.5 m. Calculate r rightarrow = r rightarrow x F rightarrow. Give magnitude and direction of r rightarrow. (x and y axes are as labeled in the diagram; the z axis points out of the page.)

Explanation / Answer

Apply the Pallogram law of Vectors

C = sqrt(3^2+2^2+2*2*3*Cos(40 degree))

= 4.71

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