A force barF=hati+4hatj acts on block sh...

A force `barF=hati+4hatj` acts on block shown. The force of friction acting on the block is :

`-hati`

`-1.8 hati`

`-2.4hati`

`-3hati`

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ALLEN-NEWTON'S LAWS OF MOTION & FRICTION-EXERCISE (O-1)

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