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Physics homework help

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Simple physics due in 1 hr!

Plz look at attachments. 

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haw many revolutions does the merry go round make in 4 min

A mery go round starts spinning at 14 rev per min, but slows to 2 rev per min after 4 min. haw many revolutions does the merry go round make in 4 min

 

a) 8 rev

b) 32 rev

c) 44 rev

if all three of the following have the same mass and radius, which requires the most work to get spinning...

if all three of the following have the same mass and radius, which requires the most work to get spinning with the same angular speed w?

 

A) sphere

B) cylinder 

C) hoop

 

electromagnetism

CAN ANY OF YOU COMPLETE THESE 6Q  WITHIN MAX 5 HRS

REPLY ASAP

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design and analyze a modular linear-rail hoist structure that spans 8 meters between existing supports and can lift 2.5KN

It is a Static project but it is related to physics for sure, to do this project u must know physics , Statics and cumputer model (creo ,solid work , Inventor .solodedge ..tc).

I would do it by myself but i don't have time I'm allready busy in three another projects.

 

please check the attacment for project details.

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