1.

Anil has a two-wheeler that weighs 120 kg. After completing his work, he used to park his vehicle in the regular parking place which is in connected to the ground with a ramp of inclination 45^(@). If the length of ramp is 1 m, then calculate the work done by Anil to park the vehicle anginst gravity. ((g=10ms^(-2))

Answer»

10500 J
1005 J
1050 J
1500 J

Solution : `AC=100cm,BC=BA,AC^(2)=AB^(2)+BC^(2)`
Since inclination is `45^(@),AB=BC`
THEREFORE, `AC^(2)=2AB^(2)`
`impliesAB=sqrt""(10000//2)`
The WORK DONE by ANIL to park the vehicle against gravity `=mgh=mgxxAB""("since "h=AB)`

`=120xx10xx0.7`
`=1,050J`
Hence, the correct option is (c).


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