Hello ?,

Does anyone know how to do any of these questions?

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Mar 30, 2020 2:38 am

Hello ?,

Does anyone know how to do any of these questions?

5 Replies

Mar 30, 2020 2:43 am

first question you sent which says "show that OA = ..." means you need to find the horizontal distance between O and A. (horizontal motion means s = d/t, rearrange and work out d). speed you need to work out via resolving and time you need to work out by considering the vertical motion

the second question "find the range of possible values for mu (coef of fric)", the particle is moving up. This means that the forces going against the direction of motion is less than the forces going upwards. Make an equation from this information;

forces opposite direction of motion parallel to plane < forces in direction of motion parallel to plane

Then rearrange for mu (coef of fric)

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