A block of mass m $$=$$ $$11$$. $$7$$ kg is to be pushed a distance of s $$=$$ $$4.65$$ m along an incline and raised to a distance of h $$=$$ $$2.86$$ m. Assuming frictionless surface, calculate the work done in applying a force parallel to the incline to push the block up at a constant speed. (Take$$, g $$=$$ $$9.8$$ $$ms-2)

Question

A block of mass m $$=$$ $$11$$. $$7$$ kg is to be pushed a distance of s $$=$$ $$4.65$$ m along an incline and raised to a distance of h $$=$$ $$2.86$$ m. Assuming frictionless surface, calculate the work done in applying a force parallel to the incline to push the block up at a constant speed. (Take$$, g $$=$$ $$9.8$$ $$ms-2)

Infinity Learn · Accepted Answer

Given,  $$m=11.7$$ kg,$$s=4.65$$ m,$$h=2.86$$ mFrom the figure, $$sin$$θ$$=hs=2.864.65=0.615Also$$, component of mg along the incline is mg $$sin$$ θ.∴Work done by this force $$=$$ mg $$sin$$ θ· $$s=$$ $$11.7$$ x $$9.8$$ x $$0.615$$ x $$4.65=$$ $$11.7$$ x $$9.8$$ x $$2.86$$ $$=$$ $$327.9$$ ≃ $$328J$$

A block of mass m = 11. 7 kg is to be pushed a distance of s = 4.65 m along an incline and raised to a distance of h = 2.86 m. Assuming frictionless surface, calculate the work done in applying a force parallel to the incline to push the block up at a constant speed. (Take, g = 9.8 ${ms}^{- 2}$ )

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A block of mass m = 11. 7 kg is to be pushed a distance of s = 4.65 m along an incline and raised to a distance of h = 2.86 m. Assuming frictionless surface, calculate the work done in applying a force parallel to the incline to push the block up at a constant speed. (Take, g = 9.8 ms-2)

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A block of mass m = 11. 7 kg is to be pushed a distance of s = 4.65 m along an incline and raised to a distance of h = 2.86 m. Assuming frictionless surface, calculate the work done in applying a force parallel to the incline to push the block up at a constant speed. (Take, g = 9.8 ${ms}^{- 2}$ )