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zlopas [31]
3 years ago
14

A motor-driven winch pulls a 50.0 kg student 5.00 m up the rope at a constant speed of 1.25 m/s. how much power does the motor u

se in raising the student? how much work does the motor do on the student?
Physics
1 answer:
nadya68 [22]3 years ago
7 0
Power is the rate work done given by dividing work done by unit time. It is measured in watts equivalent to J/s.
In this case the force by the student is mg = 490 N (taking g as 9.8m/s²)
Work done is given by force × distance,
Therefore, Power =(force × distance)/ time, but velocity/speed =distance/time
Thus, Power = force × speed/velocity
                     = 490 N × 1.25
                     = 612.5 J/S (Watts)
Hence, power will be 612.5 Watts.
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A wheel of radius R, mass M, and moment of inertia I is mounted on a frictionless, horizontal axles. A light cord wrapped around
Alex_Xolod [135]

Answer:

\alpha =\frac{m*g*R}{I-m*R^2}

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Explanation:

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Materials required for the experiment of limiting force borne by string:-

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Steps of procedure for for the experiment of limiting force borne by string:-

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Learn more about limiting force here:- brainly.com/question/11371672

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