A body of mass 10 kg is slipping on a rough horizontal plane and moves with a deceleration of 4.0 m/ $s^{2}$ . What is the magnitude of frictional force?

40N

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20N

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100N

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Data insufficient require coefficient of kinetic friction

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Solution

The correct option is A
40N

$f_{r}$ = ma

$f_{r}$ = 10 $\times$ 4 kg- $\frac{m}{s^{2}}$

$f_{r}$ = 40 N

As friction can be the only external force acting of the body in horizontal direction

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A body of mass 10 kg is slipping on a rough horizontal plane and moves with a deceleration of 4.0 m/ s2. What is the magnitude of frictional force?

The correct option is A 40N fr = ma fr = 10 × 4 kg- ms2 fr = 40 N As friction can be the only external force acting of the body in horizontal direction

A body of mass 10 kg is slipping on a rough horizontal plane and moves with a deceleration of 4.0 m/ $s^{2}$ . What is the magnitude of frictional force?

The correct option is A
40N

$f_{r}$ = ma

$f_{r}$ = 10 $\times$ 4 kg- $\frac{m}{s^{2}}$

$f_{r}$ = 40 N

As friction can be the only external force acting of the body in horizontal direction