Question

calculate the work done if a load of 30 kg is lifted through 10m take g = 10ms-2. (2940 j)

Answer 1

Correct Question :-

Calculate the work done if a load of 30 kg is lifted through 10m take g = 9.8 m/s²

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Given :-

• Mass of the load, m = 30 kg
• gravitational acceleration, g = 9.8 m/s²
• Displacement, s = 10 m

To Find :-

• work done for lifting the load ?

Solution :-

we know that,

$\boxed{ \bold{force = mass \times acceleration}} \\ \\ \bold{: \implies 30 \times 9.8 } \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \\ \\ \bold{: \implies 294 \: N} \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \:$

so, force of 294 N is required for lifting the load

$\underline{ \boxed{ \bold{work = force \times displacement}}}$

$\bold{: \implies 294 \times 10 } \\ \\ \bold{: \implies 2940 \: J} \: \: \: \: \: \:$

hence, work done to lift the load is 2940 Joules