Two children seat themselves on a seesaw. The one on the left has a weight of 300 N while the one on the right weighs 200 N. The fulcrum is at the midpoint of the seesaw. If the child on the right is not at the end but is 1.50 m from the fulcrum and the seesaw is balanced, what is the torque provided by the weight of the child on the left? (Take ccw as positive.)
a. –300 N·m b. 300 N·m
c. 450 N·m d. –450 N·m
e. 150 N·m
b
You might also like to view...
What is the ratio of the power levels of two sounds with intensity levels of 40. dB and 70. dB?
What will be an ideal response?
A child does 350 J of work while pulling a box from the ground up to his tree house at a steady speed with a light rope. The tree house is 4m above the ground. What is the mass of the box?
A) 8.9 kg B) 8.0 kg C) 5.3 kg D) 6.7 kg
Two charges of 15 pC and ?40 pC are inside a cube with sides that are of 0.40-m length. Determine the net electric flux through the surface of the cube
a. +2.8 N / m2/C b. ?1.1 N / m2/C c. +1.1 N / m2/C d. ?2.8 N / m2/C e. ?0.47 N / m2/C
Which of the following air pollutants is emitted in about equal amounts by stationary and mobile sources?
a. particulates b. carbon monoxide c. sulfur dioxides d. hydrocarbons e. nitrogen oxides