A boy drags a bag of rice along a smooth horizontal floor with a force of 2N applied at the angle of 60^o to the floor. The work done after a distance of 3m is

anuoluwabimpe222

6 years ago

another way to go is: formula for work = force x distance
force horizontally= Fcos$
total formula to be use is workdone = Fcos$ x distance
W =2xcos$ x distance
W =2xcos60 x 3
W=2 x 1/2 x3
therefore W =3joules

Pech

3 years ago

I think sin60° was used here, not cos60°.

Somtochi25864

2 years ago

Hey.....
Pls how do we find Sine and cosine of angles since jamb doesn't give us a good calculator

Chrisbridge

1 year ago

My school the answer you gave is wrong. You applied the formula to calculate the workdone by an object that is dragged along a horizontal surface when the applied force is inclined at an angle to the horizontal.

Please check the correct sollution in the image attached to this.

Thank you.