2. (a) a man uses a uniform plank to lift a block. he holds the plank horizontal. the arrows on the diagram…

2. (a) a man uses a uniform plank to lift a block. he holds the plank horizontal. the arrows on the diagram represent three forces on the plank. complete the table to identify the missing force.\n| force | name of force |\n| ---- | ---- |\n| f | force of man pushing down on the plank |\n| 1200 n | weight of block |\n| 200 n | |

2. (a) a man uses a uniform plank to lift a block. he holds the plank horizontal. the arrows on the diagram represent three forces on the plank. complete the table to identify the missing force.\n| force | name of force |\n| ---- | ---- |\n| f | force of man pushing down on the plank |\n| 1200 n | weight of block |\n| 200 n | |

Answer

Brief Explanations:

The 200 N force is acting at the center - of - mass of the uniform plank. Since it is at the center of the plank and the plank is uniform, this force is the weight of the plank.

Answer:

weight of the plank