Amassless, rigid board is placed across two bathroom scales that are separated by a distance of 1.71 m. a person lies on the board. the scale under his head reads 475 n, and the scale under his feet reads 316 n. (a) find the weight of the person. (b) locate the center of gravity of the person relative to the scale beneath his head.

Let the weight of the person be W and be located at a distance 'a' from the left scale as shown in the figure

Since the body is in equilibrium we can use equations of statics to analyse the problem.

Taking Sum of Moments about A we have

Taking Sum of Moments about B we have

Solving the above 2 equations for W and 'a' we get

two charges are fixed in place on the x-axis as shown. the charge at x = 0 is negative and has magnitude q = 2 μcoulombs (1 μcoulomb = 10-6 coulombs). the charge at x = d, (d = +12 cm), is positive and has magnitude q = 4 μcoulombs. find a point x = xo along the x-axis at which the electric field is zero.

answer: i'm not sure which is which for i get confused on it all the time but i can tell you that the answer lies with the convex and concave devices. i hope this you. have a good day and best of luck to you!

explanation: