Question

In: Physics

A 2.0 kg wood block is launched up a wooden ramp that is inclined at a...

A 2.0 kg wood block is launched up a wooden ramp that is inclined at a 28 ∘ angle. The block's initial speed is 15 m/s . The coefficient of kinetic friction of wood on wood is μk=0.200.

What vertical height does the block reach above its starting point?

What speed does it have when it slides back down to its starting point?

Solutions

Expert Solution

Concept - work done by gravity while going up is negative and work done by gravity while going down will be positive. Hence the total work done by gravity for the round-trip will be zero. We use work energy theorem to find the required solution as shown below.***********************************************************************************************
This concludes the answers. If there is any mistake or omission, let me know immediately and I will fix it....

genius_generous answered 1 year ago
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