Adjoining figure shows a force of 40, N acting at 30^o to horizontal on a body of mass 5 ,kg resting

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4-1.Newton's Laws of Motion

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Adjoining figure shows a force of $40\, N$ acting at $30^o$ to the horizontal on a body of mass $5 \,kg$ resting on a smooth horizontal surface. Assuming that the acceleration of free-fall is $10\, ms^{-2}$, which of the following statements is (are) correct?

$[1]$ The horizontal force acting on the body is $20\, N$

$[2]$ The weight of the $5\, kg$ mass acts vertically downwards

$[3]$ The net vertical force acting on the body is $30\, N$

A

$1, 2, 3$

B

$1, 2$

C

$2$ only

D

$1$ only

Solution

$[2]$ The weight of the $5 \mathrm{kg}$ mass acts vertically downwards

Standard 11

Physics

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