- #1
mynameiscosine
- 6
- 0
Hi all. I am marking GCSE paper that I did myself. There is 1 problem that I do not seems to understand. Please help me. Thank you very much.
Daniel pulls a 3kg box up a slope from rest as shown (Attached)
Given that the average friction of a slope is 2N and the speed at which the box reaches the top is 4m/s. What is the average form ce exerted by Daniel to pull up the box from bottom to top?
I am stuck at this part because the question does not indicate the time taken nor the acceleration. I am not able to use F=MA to find. I only have the acceleration acting on the box due to gravity is approximately 10m/s2. I am not able to use the speed to my advantage in this question.
Weight = m x g
= 3 x 10
= 30 N
I am not sure what is my next step. Hope someone can help me. Thank you!
Homework Statement
Daniel pulls a 3kg box up a slope from rest as shown (Attached)
Given that the average friction of a slope is 2N and the speed at which the box reaches the top is 4m/s. What is the average form ce exerted by Daniel to pull up the box from bottom to top?
The Attempt at a Solution
I am stuck at this part because the question does not indicate the time taken nor the acceleration. I am not able to use F=MA to find. I only have the acceleration acting on the box due to gravity is approximately 10m/s2. I am not able to use the speed to my advantage in this question.
Weight = m x g
= 3 x 10
= 30 N
I am not sure what is my next step. Hope someone can help me. Thank you!