Item 1 1of4 Constarts Part A A lange crabe iled with physics laboratory equipmen

Question

Item 1 1of4 Constarts Part A A lange crabe iled with physics laboratory equipment must be moved up an incline onto a truck Fiure 1) The crate is at rest on the indline. What can you say about the force offriction ating on the crate? View Available Hint The frictional force points up the incline The frictional force points down the incline The frictional torce Figure 1 of 1 Part B Aplysost attents to push the rate up reine The physicist senses that ? he applies sighty more force the crate wil move up the ndine but cannot muster enough strength to get the motion started. What can you say now about the force of friction acting on the e Submit

Explanation / Answer

Solution:

a) Ans: (a)

Reason:Crate would move down incline in absence of friction, due to gravity therefore friction opposes this acting up the incline.

b) Ans: (b)

Reason: Crate is going to move up incline. Friction opposes therefore friction is acting down the incline.

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