Question

A kid has mass 30 kg and wants to use a 4.0-m board of mass 10 kg as a seesaw. His friends are busy, so he seesaws by himself by putting the support at the system's center of gravity when he sits on one end of the board. How far is he from the support point? 0.33 m 1.0 m 0.5 m 0.67 m

          A kid has mass 30 kg and wants to use a 4.0-m board of mass 10 kg as a seesaw. His friends are busy, so he seesaws by himself by putting the support at the system's center of gravity when he sits on one end of the board. How far is he from the support point?
0.33 m
1.0 m
0.5 m
0.67 m

A kid has mass 30 kg and wants to use a 4.0-m board of mass 10 kg as a seesaw. His friends are busy, so he seesaws by himself by putting the support at the system's center of gravity when he sits on one end of the board. How far is he from the support point?
0.33 m
1.0 m
0.5 m
0.67 m

Added by Jason W.

University Physics with Modern Physics

Hugh D. Young 14th Edition

Instant Answer

Solved by Expert Kritika Mishra

05/06/2022

Step 1

The torque due to Akid can be calculated as: Torque_Akid = 30 kg * g * x, where x is the distance of Akid from the support point. The torque due to the board can be calculated as: Torque_board = 10 kg * g * 2 m, since the board is 2 meters away from the support Show more…

Show all steps

Thanks for your feedback!

A kid has mass 30 kg and wants to use a 4.0-m board of mass 10 kg as a seesaw. His friends are busy, so he seesaws by himself by putting the support at the system's center of gravity when he sits on one end of the board. How far is he from the support point? 0.33 m 1.0 m 0.5 m 0.67 m