Hey Guys! I need ur help with this question, this question is like an incline with a pully..so we have puck which is on an incline surface, and the puck(adsbygoogle = window.adsbygoogle || []).push({});

( mass of 0.5455kg) is attached to a string which is attached to a pully, which also has a string attached to a mass of 0.05 kg. Acceleration is 0.34 m/2^2. The angle is 4.41.

A) Calculate the forces against the puck?

This wut i did-->

Ft= Force of tension

Fa= Forces the against the puck

Fnet= Ft - Fa

Since we don't have force of tesion, i used Fnet = Fg- Ft

Fnet = Fg- Ft

0.05x 0.34= 0.05x 9.8 - Ft

Ft= 0.47265

So then i used in this equation --> Fnet= Ft - Fa

Fnet= Ft - Fa

(0.5455)(0.34)= 0.47265- Fa

Fa= 0.28242N<--- Final answer

B) Should Ff be considered as a major force for your case?

Fn =mgcos4.4

5.3333 N

Fn= Force of gravity prependicular

Fg= 5.3459N ---> 0.5455 x 0.34

Then i did

a^2 + b^2 = c^2

a= Fn

c= Fg

b= force of gravity parallel

I solved for b and i got 0.3711 N

SO then i did Ff = Fa- Fg parallel

0.28242- 0.37115 = -0.08873 N

I got a negative force of firction :surprised ..so now i have no clue wut do to

I am sorre if some of you guys are confused, and plz tell me wut i am doing rite or wrong...this assignment is worth big marks anyways THANK U in advance.

Tanya

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# Homework Help: Need help yet again

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