Question

A person trying to loose weight lifts 10kg mass one thousand times to a height of 0.5 m Each time . Assume that the potential energy lost each time she lowers the mass dissipated. A) how much work does she do against the gravitational force? B) Fat supplies 3.8*10^7 J of energy /kg which is converted to mechanical energy with a 20% efficiency rate. How much fat will the dieter use up?

Name: a person trying to loose weight lifts 10kg mass one thousand times to a height of 05 m each time assume that the potential energy lost each time she lowers the mass dissipated a how much work does she
Uploaded: 2022-01-17T11:23:23-08:00
Duration: 4 min 36 s
Channel: Vipin Kumawat
Description: a person trying to loose weight lifts 10kg mass one thousand times to a height of 05 m each time assume that the potential energy lost each time she lowers the mass dissipated a how much work does she

          A person trying to loose weight lifts 10kg mass one thousand times to a height of 0.5 m Each time . Assume that the potential energy lost each time she lowers the mass dissipated. A) how much work does she do against the gravitational force? B) Fat supplies 3.8*10^7 J of energy /kg which is converted to mechanical energy with a 20% efficiency rate. How much fat will the dieter use up?

Added by Anuj C.

NCERT Class 11 Part 1 - Physics

Anup Kumar Rajput, Shweta Uppal, Arun… 1st Edition

Chapter 6

Instant Answer

Solved by Expert Vipin Kumawat

01/17/2022

Step 1

Given: Mass (m) = 10 kg Height (h) = 0.5 m Number of repetitions = 1000 Acceleration due to gravity (g) = 9.8 m/s^2 Work done = Force x Distance Force = Weight = mass x gravity Distance = height Work done = 1000 x (10 x 9.8 x 0.5) = 49000 J Show more…

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A person trying to loose weight lifts 10kg mass one thousand times to a height of 0.5 m Each time . Assume that the potential energy lost each time she lowers the mass dissipated. A) how much work does she do against the gravitational force? B) Fat supplies 3.8*10^7 J of energy /kg which is converted to mechanical energy with a 20% efficiency rate. How much fat will the dieter use up?