I need help understanding a physics question: Question 34-37

Physics
Tutor: None Selected Time limit: 1 Day

Dec 15th, 2015

Thank you for the opportunity to help you with your question!

In question 'a' the direction of the arrow will be on option will be 'c' because centripetal force of an object is perpendicular to the motion of the moving object

in question 'b' the the answer will be 'd ' since the centripetal force of an object will always be perpedicular to the motion of the object


ke =0.5* mvv

12kg=12000g

v=5m/s

0.5*12000*5*5

=150000 joules


PE=mgh

2kg

150m

pe=2*10*150

=3000 joules


power=w/time

energy=500 joules

time=10 s

500/10

=50W


Regards

Please let me know if you need any clarification. I'm always happy to answer your questions.
Dec 15th, 2015

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