A) in our experiment the frictional surface section was a level surface; how wou
ID: 2140896 • Letter: A
Question
A) in our experiment the frictional surface section was a level surface; how would the stopping distance change if the runaway cart section was inclined up to 10degrees. HOw would it change if the runaway cart section was incline down at 10degrees. Explain please!
B) Increasing the mall of the cart will: a) increase the stopping distance and increase power dissipation, or b) increase the stopping distance and not change the power dissipation or c) not change the stopping distance and not change power dissipation or d) not change the stopping distnace and increase the power dissipation, or e) decrease the stopping distance and decrease the power dissipation
C) Considering that mechanical energy is conserved quantity, where does all of the kinetic energy of the cart go when it hits the runaway cart pad? a) it gets converted to potential energy b) the kinetic energy just goes away because it is not a conserved quantity c) it gets converted into heat energy d) it stays in the cart as kinetic energy e) none of the above
I have no idea how to figure out A. But for B i thought the answer would be answer B. for Ci thought the answer would be A.
Explanation / Answer
A)If runawy cart is inclined up to 10 degrees, then we have an opposing force of mgsin(10).So stopping distance decreases. But if it is inclined down as 10 degrees, we will have a supporting force of mgsin(10).So, stopping distance increases.
B) answer is D. as acceleration depends only on friction not on mass. a=friction coefficeint*g
Power increases as kinetic energy of body increases due to increase in mass.
C) ans is c. as after hitting, it causes heat produced in pad and body. No change in potential enegry as body is not going up to any height.
IF ANY OTHER DOUBT IS THERE, JUST COMMENT BELOW.
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