4.(12 pts] A block slides down the ramp shown in the diagram. traveling at 3.83

Question

4.(12 pts] A block slides down the ramp shown in the diagram. traveling at 3.83 m/s at the bottom of the ramp. Friction is negligible. It starts from rest at the top of the ramp. It is (a) Find the height h of the ramp. (You do not need to know the mass of the block.) 0.75 m (b) Another block is released from rest at the top of the ramp. This block does experience some friction and loses 2 Joules of energy as it slides down the ramp. What information do you need to know to figure out the block's speed at the bottom of the ramp? (Circle the number before the one correct choice.) height of ramp and size of friction force 2) height of ramp and mass of block height of ramp only height of ramp and coefficient of friction 4.

Explanation / Answer

Here ,

a) let the height is h

m * g * h = 0.50 * m * v^2

9.8 * h = 0.50 * 3.83^2

h = 0.195 m

the height h of the ramp is 0.195 m

b)

for the speed at the with friction present

we need mass and height

hence , the corect option is 2) height of ramp and mass of block

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