Question
A block, kept on ground, requires 10 N of horizontal force to just start moving. If we apply a force of 5 N on the block in horizontal direction, what will be the magnitude of frictional force acting on it?
Answer: Option B
:
B
The force required to just move the block is 10 N. This means that when we apply a force of 5 N on it, it will not move. Static frictionwill act opposite to the applied force to balance it. Hence, frictional force acting on the block will be 5 N in the direction opposite to the applied force.
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:
B
The force required to just move the block is 10 N. This means that when we apply a force of 5 N on it, it will not move. Static frictionwill act opposite to the applied force to balance it. Hence, frictional force acting on the block will be 5 N in the direction opposite to the applied force.
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