- #1
Punchlinegirl
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A thin rectangular plate of uniform area density = 2.86 kg/m^2 has a length of 42.0 cm and a width of 23.0 cm. The lower left hand corner is located at the origin, (x,y)=(0,0) and the length is along the x-axis. There is a circular hole of radius 7.00 cm with center at (x,y)= (15.00, 9.50) cm in the plate. Calculate the mass of the plate.
I know that density= mass/volume
so i found the volume of the plate to be .0966 m^2.
I multiplied 2.86 * .0966 to get .276 kg for the mass.
This wasn't right. Do I need to use the information about the circle for this problem?
Thanks
I know that density= mass/volume
so i found the volume of the plate to be .0966 m^2.
I multiplied 2.86 * .0966 to get .276 kg for the mass.
This wasn't right. Do I need to use the information about the circle for this problem?
Thanks