Question
A physics professor is pushed up a ramp inclined upward at $30.0^{\circ}$ above the horizontal al as he sits in his desk chair that slides on frictionless rollers. The combined mass of the professor and chair is 85.0 $\mathrm{kg} .$ He is pushed 2.50 $\mathrm{m}$ along the incline by a group of students who together exert a constant horizontal force of 600 $\mathrm{N} .$ The professor's speed at the bottom of the ramp is 2.00 $\mathrm{m} / \mathrm{s} .$ Use the work-energy theorem to find his speed at thetop of the ramp.
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This gives us $85 \, \text{kg} \times 9.8 \, \text{m/s}^2 = 833 \, \text{N}$. Show more…
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A physics professor is pushed up a ramp inclined upward at 30.0$^\circ$ above the horizontal as she sits in her desk chair, which slides on frictionless rollers. The combined mass of the professor and chair is 85.0 kg. She is pushed 2.50 m along the incline by a group of students who together exert a constant horizontal force of 600 N. The professor's speed at the bottom of the ramp is 2.00 m/s. Use the work$-$energy theorem to find her speed at the top of the ramp.
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