A body is under action of a force F such that the force displacement graph of the body is semi circular as shown above. The work done on the body by the force in moving through 24 meters is

AhileEucharia

6 years ago

Workdone =area of semi circle
=1/2 × pii × r^2
Where r=12, and pii is undefined...
=1/2 × pii × 12^2
=1/2 × pii × 12 ×12
=1/2 × pii × 144
= 1/2 of 144 × pii
=72piiJoules
Or alternatively..
Where pii= 22/7
Wd = 1/2 × 22/7 × 12^2
=1/2 × 22/7 × 144
=11/7 × 144
=11 × 144 ÷ 7
= 1584 ÷ 7
= 226.28Joules
Approximately 226.3Joules

AlakaQuadri

6 years ago

Why is ther no official explanation