Dr Blotters weighed 1505 lbs as of 21413 If lie jumped onto

Dr. Blotters weighed 150.5 lbs as of 2-14-13. If lie jumped onto a and landed oil the end of the high seat from 5 feet up. how high would his son go (in feet) if his son weighs 60.3 lbs? You can nssunie the length of the boards connected to the seat are equal in length: State any assumptions you made to arrive at your answer

Solution

potential energy of Dr Blowers = m1gh1 where m1 is mass of Dr blowers g is gravitational constant and h1 ie height from where it jumps.

when he jumps potential energy of Dr Blowers will convert into kinetic energy and is transferred to his son.

now let h2 is height where son goes. Potential energy of son = m2gh2.

now m1gh1=m2gh2 so h2=150.5*5/60.3 =12.48 ft.

Assumption is that there is no energy loss due to friction.