Find acceleration of block in each case.
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a)
Normal reaction
N = 20N+50N = 70N
so
frictional force
Ff= .5×70= 35 N
friction is greater than applied force so acceleration should be 0
Normal reaction
N = 20N+50N = 70N
so
frictional force
Ff= .5×70= 35 N
friction is greater than applied force so acceleration should be 0
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