Question

A lawn roller is displaced through 1km using a force of 200N in a direction making an angle of ${60}^0$ with the lawn. The work done is

• A. ${10}^{5}J$
• B. ${10}^{4}J$
• C. ${10}^{6}J$
• D. ${10}^{3}J$

Answer 1

The correct option is A

${10}^{5}J$

$W=Fscos\theta =200\times 1000\times 1/2={10}^{5}J$