# Pulling a sled across snow with a rope at an angle

Poster has been reminded to show their work on schoolwork problems
Homework Statement:
I need help understanding this exercise
Relevant Equations:
dont know
Hello. Can someone tell me what area of phisics should I study to better understand this exercise and also what should I do to solve this exercise please?
A man pulls a small sledge with a force F ⃗ of intensity equal to 50.0 N and that makes an angle with the horizontal θ = 30º (see figure). The sled moves horizontally and the resistance that the snow offers to the movement of the sled results in a frictional force of intensity F a = 15 N. the sled has a mass of 20 kg. Determine:

a) the normal reaction to which the sled is subjected;

b) the resulting horizontal force on the sled;

c) the acceleration acquired by the sled;

d) the speed acquired by the sled after 10 s, assuming it started from rest.

(Use g = 10.0 m ∙ s -2 ).

Last edited by a moderator:

phinds
Gold Member
Can someone tell me what area of phisics should I study to better understand this exercise and also what should I do to solve this exercise please?
Assuming you know trig, you just need classical mechanics.

berkeman
Mentor
also what should I do to solve this exercise please?
With this type of problem, it is usually best to start by drawing a Free Body Diagram (FBD). So show us your FBD for the sled, and show us the equations that you write for it given the problem description and the questions...

Purpleshinyrock and Vinh Nguyen
Lnewqban
Gold Member
Last edited:
Purpleshinyrock
Thank You all for the answers and advice I used them to learn about the topic and solve the problem,

#### Attachments

• Screenshot_2021-04-04 2020-11-11 18 32 Office Lens(1) pdf.png
93.7 KB · Views: 48
Lnewqban
phinds
Gold Member
Illegible

Illegible
Is this better sir/maam?

#### Attachments

• 2020-11-11 18 32 Office Lens(1).pdf
515.1 KB · Views: 46
phinds
PeroK