For exercise, an athlete lifts a barbell that weighs 400 N from the ground to a height of 2.00 m at a constant speed in a time of 1.60 s. d.) What is the output power, in kW (kiloWatts)?  e.) What is the metabolic power, in kW (kiloWatts)?  f.) How long does it take to burn off the energy in a slice of apple pie, which energy content is 1680 kJ (400 food calorie), in minutes?

Q: a) Calculate the work done in lifting a 500 N barbell 2.2 m above the floor. b). What is the…

A: Given Weight of the barbell is F=500 N Height above the ground is h=2.2 m Time taken to lift the…

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A: Have a look dear

Q: 3. See the figure below. If a 3 kg mass is moved up the first frictionless incline and the same 3 kg…

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A: Given data:  Work done (W) = 350 J Height (h) = 9 m Required: Mass (m)

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Q: 1. If you pushed a 20 kg box across the floor for a distance of 60 m with a force of 15 N how much…

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Q: SI unit of power is the Watt (W).

A: This question is based on Unit dimensions .

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Q: A father pushes his child weighing 100. pounds on a sled on a frictionless surface. How much work…

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Q: One watt-hour is equivalent to: A. 6.3 x 103 J B. 6.3 x 10-7 J C. 3.6 x 103 J D. 3.6 x 10-3 J

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Q: 2. A spring on a horizontal surface can be stretched and held 0.5 meters from its equilibrium…

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Q: The force, F, required to compress a spring by a distance x meters is given by F = 3x newtons. ||…

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Q: Which of the following is not an equation for getting work? Select one: a. W=Fd b. W=Fdcosθ c. W=N⋅m…

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Q: A certain spring whose normal length is 42 cm is stretched 6.3 cm by a force of 18 N. How much work…

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Q: Question 3: a. Ina roller coaster the ride includes a vertical drop of 120 m. Suppose that the…

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Q: A weight lifter raises a 170 kg barbell from the ground to a height of 1.5 m. What is the barbell's…

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