Question

A box of mass 1kg is pulled through 1m along a level floor by a horizontal force of 8N. The box is then raised vertically onto a bench 2m high. If g=10m/s², calculate the total work done.

plss.... show the process..​

Answer 1

W=mgh+FS=1(10) (2) +8×1=20+8=28J

Explanation:

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Answer 2

$\huge\bf\boxed{\boxed{\underline{\red{Answer!!}}}}$

$\huge\bold{Given}$

$\mathrm\blue{Mass = 1kg}$

$\mathrm\blue{Distance = 1m}$

$\mathrm\blue{Force = 8N}$

$\mathrm\blue{height = 2m}$

$\mathrm\blue{Gravity = 10m/s²}$

$\huge\bold{To \:find}$

$\mathrm\pink{Work = ?¿}$

$\huge\bf\boxed{\boxed{\underline{\purple{\:Work = Mass × Distance}}}}$

$\mathrm\pink{Work = F × S}$

$\mathrm\pink{Work = 8 × 1}$

$\mathrm\pink{Work = 8J}$ -----------(1)

$\huge\bf\boxed{\boxed{\underline{\red{Now = mass × gravity × height}}}}$

$\mathrm\pink{Work = mgh}$

$\mathrm\pink{Work = 1 × 10 × 2}$

$\mathrm\pink{Work = 20J}$ -----------(2)

Equate (1) and (2)

$\mathrm\pink{\:Total \:work}$

$\mathrm\pink{8J + 20J}$

$\mathrm\pink{Work = 28J}$