somer Your 6. How much work is done against gravity in lifting a 3.0 kg object t
ID: 1661449 • Letter: S
Question
somer Your 6. How much work is done against gravity in lifting a 3.0 kg object through a vertical distance of FEma 40 cm? The The 7. a How much work is done on an object by the force that supports it as the object is lowered at a constant speed through a vertical distance h? Give your answer in "alphabet form." Schaum's Outline p 77 b. How much work does the gravitational force on the object do in this same process? Give your answer in "alphabet form." 8. A force of 100 N is used to stop a 2 kg cart moving 1 m/s. What is the work done on the cart by the applied force?Explanation / Answer
5)
mass m = 0.3 kg
distance d = 0.8 m
work = µmgd = 0.2 x 0.3kg x 9.8m/s^2 x 0.8m = 0.5 J
6)
F = mgh
F = 3 kg x 9.81 m/s^2 x 0.40 m
F = 12 J
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