A sculptor and his assistant are carrying a wedge-shaped marble slab up a flight of stairs, as shown in the figure

Question:

A sculptor and his assistant are carrying a wedge-shaped marble slab up a flight of stairs, as shown in the figure. The density of the marble is uniform. Both are lifting straight up as they hold the slab completely stationary for a moment. Does the sculptor have to exert more force than the assistant to keep the slab stationary? Explain.

Answer:

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