Cubical Blocks of Mass M and Side L Are Piled $\frac { 5 } { 2 }$

question 15

Multiple Choice

Cubical blocks of mass m and side l are piled up in a vertical column.The total gravitational potential energy of a column of three blocks is

• A) \(\frac { 5 } { 2 }\) mgl.
• B)3mgl.
• C) \(\frac { 9 } { 2 }\) mgl.
• D)6mgl.
• E)9mgl.

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