Question

As shown in figure, a $70 kg$ garden roller is pushed with a force of $\vec{F}=200 N$ at an angle of $30^{\circ}$ with horizontal. The normal reaction on the roller is (Given $g=10 m s ^{-2}$ )

• A. $800 N$
• B. $600 N$
• C. $200 \sqrt{3} N$
• D. $800 \sqrt{2} N$

Answer 1

Answer: (A)

$800 N$

Answer 2

N=mg+Fsin30∘
=700+200×21​=800 newton.