Question
Question: A block of mass 2 kg is kept on the floor. The coefficient of static friction is 0.4. If a force F o...
A block of mass 2 kg is kept on the floor. The coefficient of static friction is 0.4. If a force F of 2.5 N is applied on the block as shown in the figure, the frictional force between the block and the floor will be
A
2.5 N
B
5 N
C
7.84 N
D
10 N
Answer
2.5 N
Explanation
Solution
Applied force = 2.5 N and limiting friction = μmg = 0.4 × 2 × 9.8 = 7.84 N
As applied force is less than limiting friction. So, for the given condition static friction will work.
Static friction on a body = Applied force = 2.5 N.