- #1
Molly1235
- 77
- 4
Ok, so I have a question for my first AS level assignment:
"A mass of 40kg is pushed up the slope shown opposite in 20 seconds (assume acceleration due to gravity is 9.8 m/s^2". The slope is 5m, base 4m and height 3m.
It first asks to calculate the work done against gravity.
This confused me as obviously I can't use WD = Force * distance moved in direction of force as it is going the opposite way. So would I be right in thinking (as WD is energy transferred) that you would calculate GPE? (M*G*H)
I did 40 * 9.8 * 3 = 1176J
"A mass of 40kg is pushed up the slope shown opposite in 20 seconds (assume acceleration due to gravity is 9.8 m/s^2". The slope is 5m, base 4m and height 3m.
It first asks to calculate the work done against gravity.
This confused me as obviously I can't use WD = Force * distance moved in direction of force as it is going the opposite way. So would I be right in thinking (as WD is energy transferred) that you would calculate GPE? (M*G*H)
I did 40 * 9.8 * 3 = 1176J