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Mechanics 2 work done

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1. Hello can someone help me with the top question, thanks
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2. (Original post by Bobby21231)
Hello can someone help me with the top question, thanks
You need to find the component of the force that acts along the slope. Do you have a diagram?
3. (Original post by notnek)
You need to find the component of the force that acts along the slope. Do you have a diagram?
Here's my diagram I'm confused because there's two angles
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4. (Original post by Bobby21231)
Here's my diagram I'm confused because there's two angles
Work done = Fs cos (theta) = 20 X 3 X cos 20.
5. (Original post by tangotangopapa2)
Work done = Fs cos (theta) = 20 X 3 X cos 20.
Ok thanks do I just ignore the weight
6. (Original post by Bobby21231)
Ok thanks do I just ignore the weight
Yes. You're asked to find the work done by the pulling force - the weight is not relevant.
7. (Original post by notnek)
Yes. You're asked to find the work done by the pulling force - the weight is not relevant.
Ok thankyou

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