1. Mark and his brother, John, with masses 605 kg and 60 kg, respectively, sit o

Question

1. Mark and his brother, John, with masses 605 kg and 60 kg, respectively, sit on a balance seesaw. If Mark is 2.5 m from the center ofthe seesaw, where should john sit in order to balance the seesaw?

2.Janet, who has a mass of 50h, sits on a merry-go-around. If her speed is 5 m.s and she is located at distance 2.5m from the center of the merry-go-around, what is janet's angular momentum?

3. What torque does a 165 N salmon exert abut the handle of 2 m-long fishing pole if the pole is horizontal and the salmon though out of the water is pulling at an angle of 30 degrees to the horizontal?

Explanation / Answer

1)h=25.2 m

2)angular mom=mvr=50*5*2.5=625

3)Torque=165*2*0.5=165 N-m

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