Question

8. A girl having mass of 35kg sits on a trolley of mass 5kg . The trolley is given an initial velocity of 4m/s by applying a force. The trolley cones to rest after traversing a distance of 16m. How much work is done on the trolley

Answer 1

I got 6272J

Step-by-step explanation:

First, you need to calculate the overall weight of the girl and the trolley by using this formula;

W (weight) = mg

Substitute the values;

W = (35 + 5) × 9.8

W = 40 × 9.8

∴ W = 392N

Their weight will be our force and now we can finally calculate how much work is done with this formula;

Work done = F × d

Substitute the values;

W (work done) = 392 × 16

∴ W = 6272J

I hope this helps! Let me know if I have any misconceptions or miscalculations! :)