Question

A 900-N lawn roller is to be pulled over a 5-cm (high) curb. Radius of roller is 25 cm. What minimum pulling force is needed if angle made by handle is (a) 0 deg (b) 30 degrees?

Answer 1

https://www.google.com/search?q=a+900-N+lawn+roller+is+to+be+pulled+over+a+5-cm+(high)+curb.+Radius+of+roller+is+25+cm.+What+minimum+pulling+force+is+needed+if+angle+made+by+handle+is+(a)+0+deg+(b)+30+degrees%3F&oq=a&aqs=chrome.2.69i57j69i60j69i59j69i60l3.2557j0j8&sourceid=chrome&espv=210&es_sm=93&ie=UTF-8
try the links on google

Answer 2

Appreciate the link but i need someone who can answer this maybe he/she can solve this in an easy way

Answer 3

you ALWAYS want to try to solve it havin someone else do it for you is not the way im sure your teacher wants YOUR work and plus how are you goin to learn if you dont try yourself now you should stop tryin to take the easy way out and DO IT YOURSELF!!

Answer 4

Sorry, IDK, I am not good with angles.
@agent0smith @mathmale @ganeshie8

Answer 5

i mean if you dont get it ask your mommy and darry tell me if what i said is right or not xD

Answer 6

@thomaster

Answer 7

@bibby

Answer 8

I think it important that you make your own drawing, since that way you could identify the fulcrum point and eliminate info that's not needed in the solution of this problem. What a shame that Draw is not working at the moment.

The 900N, 25 cm radius lawn roller touches the curb at point A. Make A the fulcrum.

The 900N weight of the roller points downward and is located what horizontal distance to the left of point A?

Supposing that the angle "theta" were zero (0). Then force F acts horizontally, pulling the axis of the roller to the right. How far above point A is force F located?

Once you've answered these questions, set up an equation involving moments.

The sum of the moments around point A must be zero.

What is the moment about point A created by the 900N weight of the roller? Again, you must figure out how far to the left of this point A the downward vertical force 900 N is located.

What is the moment about point A created by the horizontal force F? Again, you must figure out how far above point A this force is located.

Questions?

Answer 9

Thanks I just answered it