Whether the acceleration of the object’s center of mass due to the applied force is same, larger than, smaller than or zero when the force were applied at the center of mass.

Question

A person carries a plank of wood 2.0 m long with one hand pushing down on it at one end with a force F1 and the other hand holding it up at 50 cm from the end of the plank with force F2. f the plank has a mass of 19 kg and its center of gravity is at the middle of the plank, what is the force F2, in newtons? If the plank has a mass of 19 kg and its center of gravity is at the middle of the plank, what is the force F1, in newtons?

Answer 1

Question

Chapter 12, Problem 12.3OQ

To determine

Whether the acceleration of the object’s center of mass due to the applied force is same, larger than, smaller than or zero when the force were applied at the center of mass.

Expert Solution & Answer

Trending nowThis is a popular solution!

See solution

Check out sample textbook solution

Students have asked these similar questions

A person carries a plank of wood 2.0 m long with one hand pushing down on it at one end with a force F1 and the other hand holding it up at 50 cm from the end of the plank with force F2. f the plank has a mass of 19 kg and its center of gravity is at the middle of the plank, what is the force F2, in newtons? If the plank has a mass of 19 kg and its center of gravity is at the middle of the plank, what is the force F1, in newtons?

only answer d and e! One end (A) of a thin rod rests on a floor, with coefficient of static friction μs. The other end (B) of the rod leans against a frictionless wall. The rod has a length of L and a mass of m. The rod has a uniform density, so the center-of-mass is a distance L/2 from either end. The rod does not move. NOTE: All answers should be written in terms of the given variables only (m, g, L, θ, μs) a) Draw a free body diagram for the rod clearly showing all forces and where they are applied. Hint: There are four forces! b) On your diagram, draw and label the line of action and lever arm for the weight force about point A. c) What is the torque produced by the weight force about point A? d) Using static equilibrium equations, find the three support forces (two at A, one at B). e) Given the coefficient of static friction μs, what is the smallest possible angle before the rod starts to move?

A 1.90-m-long barbell has a 21.0 kg weight on its left end and a 32.0 kg weight on its right end. If you ignore the weight of the bar itself, how far from the left end of the barbell is the center of gravity? Express your answer to three significant figures and include the appropriate units. Where is the center of gravity if the 9.00 kg mass of the barbell itself is taken into account? Express your answer to three significant figures and include the appropriate units.