Question

a 2 kg body is sliding up an inclined plane of information 30 degree find the work done by the force of gravity in moving the body through 1 metre

Answer 1

Work done = f *cos theta* s
Force = ma
. = 2 * 10 or 9.8
= 20 or 19.6

Take 20 if g = 10 or 19.6 if g = 9.8
I had taken g = 10

Wd = 10 * root 3 / 2 * 1
= 5 * root 3
= 8.65 joule ( root 3 = 1.73)

Answer 2

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