Question

The block is of uniform density ( State the height of the centre of mass of the block above the ground. the weight of block is 240 N and pressure is 2.6 X 10³​

Answer 1

Explanation:

m=v*density

m=6×4×2×1.5×10

3

=72×10

3

kg

when face with large area is in contact with the ground its height is 2m

Centre of mass is at a height of 1m

when face with small area is in contact with the ground its height is 6m

Centre of mass is at a height of 3m

W=72×10

4

(3−1)=1440kJ