Turn on thread page Beta
    Offline

    18
    ReputationRep:
    (Original post by misslili118)
    that makes sense! thanks alot
    Yay!
    Offline

    12
    ReputationRep:
    (Original post by Student403)
    Yay!
    when u go out with the m8s but mechanics is still life
    Offline

    18
    ReputationRep:
    (Original post by aymanzayedmannan)
    when u go out with the m8s but mechanics is still life
    :rofl: So true :innocent:
    • Thread Starter
    Offline

    1
    ReputationRep:
    (Original post by Student403)
    :rofl: So true :innocent:
    Student403 aymanzayedmannan
    I'm back with more questions :
    1. A fairground ride consists of a rotating cylinder. People stand on the inside of the cylinder with their backs to it. When the speed of rotation is great enough the floor is lowered so that only friction stops them from falling. The diameter between a peron's body and the cylinder is taken as 0.5. Find the least angular speed necessary to stop a person from falling.

    2. A child sits on a roundabout at a distance of 5 m from the centre of rotation and at a height of 2 m above ground level. The roundabout completes one revolution every 2 seconds. After one revolution the child drops a small toy, of mass 500 grams, that she was carrying, which then falls to the ground without hitting the roundabout.

    (a) Find the acceleration of the child on the roundabout and the magnitude of the force exerted on the toy by the child, before she drops it. Hint: include the weight of the toy.


    For the second question I found the acceleration but I got the magnitude wrong, I did f= ma using the previous answer which gave me 24.7 but the answer is 25.2.
 
 
 

3,263

students online now

800,000+

Exam discussions

Find your exam discussion here

Poll
Should predicted grades be removed from the uni application process
Help with your A-levels

All the essentials

The adventure begins mug

Student life: what to expect

What it's really like going to uni

Rosette

Essay expert

Learn to write like a pro with our ultimate essay guide.

Uni match

Uni match

Our tool will help you find the perfect course for you

Study planner

Create a study plan

Get your head around what you need to do and when with the study planner tool.

Study planner

Resources by subject

Everything from mind maps to class notes.

Hands typing

Degrees without fees

Discover more about degree-level apprenticeships.

A student doing homework

Study tips from A* students

Students who got top grades in their A-levels share their secrets

Study help links and info

Can you help? Study help unanswered threadsRules and posting guidelines

Groups associated with this forum:

View associated groups

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Write a reply...
Reply
Hide
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.