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A block of wood of mass 5kg is pulled on a platform by a ...

A block of wood of mass 5kg is pulled on a platform by a force of 40N as illustrated in the diagram above. If the frictional force, F experienced by the block is 12N, calculate the magnitude of the acceleration of the acceleration of the block

A block of wood of mass 5kg is pulled on a platform by a force of 40N as illustrated in the diagram above. If the frictional force, F experienced by the block is 12N, calculate the magnitude of the acceleration of the acceleration of the block

A.

2.4ms-2

B.

5.6ms-2

C.

8.0ms-2

D.

2.4ms2

Correct answer is B

F + Ma = P

a = PFm

= 40125=5.6ms2