What is the system of interest

Assignment Help Physics

Reference no: EM132101012

Question: 1. A brave but inadequate rugby player is being pushed backwards by an opposing player who is exerting a force of 800 N. The mass of the losing player plus equipment is 90.0kg and he is accelerating at 1.20 metre per second squared backward.

a: What is the force of friction between the losing players feet and the grass?

b. What force does the winning player exert on the ground to move forward if his mass plus equipment is 110 kg?

c: Draw a sketch of the situation showing the system of interest used to solve each part. For this situation draw a free body diagram and write the net force equation.

2. Suppose two children push horizontally, but in exactly opposite directions,on a third child in a wagon. The first child exerts a force of 75.0 N, the second a force of 90.0 N, friction is 12.0 N and the mass of the third child plus wagon is 23.0kg

a) What is the system of interest if the acceleration of the child in the wagon is to be calculated?

b) Draw a free body diagram, including forces acting on the system

c) calculate the acceleration

d) what would the acceleration be if friction were 15.0 N?

8) A system can have a nonzero velocity while the net external force on it ,is zero. Describe such a situation.

Reference no: EM132101012

Questions Cloud

Address any additional compensation items : Address any additional compensation items. For example, is this position eligible for a bonus or commission?

How much work is done by the force : A 15nC charge is moved from a point where V= 210V to a point where V=-30V. How much work is done by the force that moves the charge?

What challenges encountered when trying to survive on skin : From the fungal "point of view," what challenges could be encountered when trying to survive on human skin, or inside of a human organ

Some ethical dilemmas sales professionals may encounter : Describe some ethical dilemmas sales professionals may encounter. How can sales compensation programs be modified to minimize ethical dilemmas?

What is the system of interest : Suppose two children push horizontally, but in exactly opposite directions,on a third child in a wagon. The first child exerts a force of 75.0 N.

Compare the two arrays placing the unique integers : Compare the two arrays placing the unique integers which occur in each individual array into new array called unique.

Describe the colonization of the pellicle layer by bacteria : Question: Describe the colonization of the pellicle layer by bacteria and the formation of the plaque

Which of the two annuities would be a better option : The first annuity pays $2,400 each month over a 4 year period at a nominal rate of 11% p.a. The second annuity pays $15,000 each six-month period

Kyparisis owns a company that manufactures sailboats : George Kyparisis owns a company that manufactures sailboats. Based on the given data and using the multiplicative seasonal? model,

User Account

All Pages