A block is pulled along a rough level surface at constant speed by the force .The figure shows the free-body diagram for the block. represents the normal force on the block; and represents the force of kinetic friction.
-What is the magnitude of ?
A)2mg
B)P
C)f
D)mg
E)This cannot be determined from the information given.

Question

A block is pulled along a rough level surface at constant speed by the force  .The figure shows the free-body diagram for the block.  represents the normal force on the block; and  represents the force of kinetic friction. 
-What is the magnitude of  ?
A)2mg 
B)P 
C)f 
D)mg 
E)This cannot be determined from the information given.

Quizplus · Accepted Answer

The Answer of A block is pulled along a rough level surface at constant speed by the force  .The figure shows the free-body diagram for the block.  represents the normal force on the block; and  represents the force of kinetic friction. 
-What is the magnitude of  ?
A)2mg 
B)P 
C)f 
D)mg 
E)This cannot be determined from the information given.

A Block Is Pulled Along a Rough Level Surface at Constant