A block of mass m is at rest under the action of force F against a wall as shown in Figure. Which of the following statement is incorrect?

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Asked: 2023-11-06T22:09:59+05:30 In: Physics
A block of mass m is at rest under the action of force F against a wall as shown in Figure. Which of the following statement is incorrect?

Hi, I have a question and I hope anyone could answer it:

A block of mass m is at rest under the action of force F against a wall as shown in Figure. Which of the following statement is incorrect?

(A) f=mg (where f is the frictional force) 

(B) F=N (where N is the normal force) 

(C) F will not produce torque 

(D) N will not produce torque

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    1 Answer

    2. Correct option is D)

       

      As this body is in equilibrium the net force and net forque on it must be zero.

      Now,

      About centre of mass the net forque on it must be zero.

      Also, 

      The actual profile of normal reaction will be like figure (ii) to make net forque zero.

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