Vector Worksheet 3 Answers

Slides:

Advertisements

Similar presentations

 The force that act on the object are balanced in all direction.  The force cancel each other, so that the resultant force or net force is zero.  Newton’s.

Advertisements

Normal Force Force on an object perpendicular to the surface (Fn)

Make a sketch Problem: A 10.0 kg box is pulled along a horizontal surface by a rope that makes a 30.0 o angle with the horizontal. The tension in the rope.

Bellwork How much work is done by a tennis racket on a tennis ball if it exerts a horizontal force of 44 Newtons on a 0.25 kg ball from a height of 1.0.

Forces applied at an Angle & Inclined Planes

Chapter 4 Pretest.

Practice A plane flies 1500 miles East and 200 miles South. What is the magnitude and direction of the plane’s final displacement? A hiker walks 80 m.

Friction is a force that opposes the motion between two surfaces that are in contact  is a force that opposes the motion between two surfaces that are.

Examples from Chapter 4.

A 6. 0-kg object undergoes an acceleration of 2. 0 m/s2

NEWTON’S SECOND LAW.

Problems Chapter 4,5.

The Nature of Friction “don’t let it rub you the wrong way”

Newton’s Laws and Dynamics

Forces in Two Dimensions

What is the normal force for a 500 kg object resting on a horizontal surface if a massless rope with a tension of 150 N is acting at a 45 o angle to the.

Force Diagrams And Types of Forces. Review Force = push or pull. Measured in Newtons. –1 lb = 4.45 N F net = ma a = F net / m Big force = big acceleration.

Practice Problems A duck flying due east passes over Atlanta, where the magnetic field of the Earth is 5.0 x 10-5 T directed north. The duck has a positive.

Warm up 1. A 13 kg wagon is pulled is pulled with an 8 N force. The handle makes a 30 degree angle with the horizontal. What is the horizontal acceleration.

Vectors vs. Scalars Pop Quiz: Which of these do you think are vector quantities? Mass, Temperature, Distance, Displacement, Speed, Velocity, Acceleration,

Physics Vectors and Forces in Two Dimensions. Problem #1 A plane is flying at a velocity of 95 m/s west and encounters a wind of 25 m/s to the south.

Physics 3.2 “Vector Operations” SOHCAHTOA. I. Determining Resultant Magnitude and Direction.

12.2 Vectors in the Plane Component form Vector Operations Linear combination of standard unit vectors Force and Velocity.

Newton’s 2 nd Law Example with Angles! Consider a box of mass m being pulled across a rough horizontal floor with an applied force F A at 35 °. The coefficient.

Physics Fall Practice Final Exam 25 Questions Time = Less than 30 minutes.

Warm-Up: December 11, 2015  A 1.75 kg rock is thrown north at a speed of 3.00 m/s. A ball of clay is thrown south at a speed of 2.00 m/s. The rock gets.

CP Physic Chapter 5 Review 1. The coefficient of kinetic friction is ______ the coefficient of static friction? ans: less than 2. Which of the following.

Try If Vectors… 2 steps north 2 steps north 5 steps west 5 steps west 4 steps north 4 steps north 6 steps west 6 steps west 10 steps north 10 steps north.

Problems – 1 A ball of mass ____ grams is tossed straight up in the air. Assuming air resistance can be ignored, draw an FBD for the ball on its way up.

Example Problems for Newton’s Second Law Answers

Friction Coefficient.

Applications of Vectors

Signs and Tightropes Answers

Key Areas covered Resolving a force into two perpendicular components.

2. Positive and negative work

Answers to Inclined Plane Problems

Work, Power Problems Answers

Newton’s Laws Forces and Motion.

The Nature of Friction OR Here’s where things start to get rough

Work and Power Quiz Solutions

Calculate the Resultant Force in each case… Extension: Calculate the acceleration if the planes mass is 4500kg. C) B) 1.2 X 103 Thrust A) 1.2 X 103 Thrust.

More Vector Examples Answers

Newton’s Laws Acceleration

Vectors What is a vector? Examples of vector quantities include:

2015 EdExcel A Level Physics

Force Vectors and Equilibrium

Mechanics & Materials 2015 AQA A Level Physics Vectors 9/17/2018.

Chapter 4 Test Review.

Free Body diagrams and problem solving

Forces 2nd Law.

35. Resolving Vectors (applications)

Work and Power.

Example Problems for Newton’s Second Law Answers

Key Areas covered Resolving a force into two perpendicular components.

Unit 1 Our Dynamic Universe Vectors - Revision

In practice we are given an angle (generally from the horizontal or vertical) and we use trigonometry 20N 20 sin 300N cos 300N.

Forces in Two Dimensions

Centripetal Example Problems Answers

Forces applied at an Angle & Inclined Planes

Chapter 4 Additional Problems

Vector Worksheet 2 Answers 1. Determine the resultant of:

ΣFy = FT - Fg = ma FT = ma + mg = m (a + g) = 5 ( ) FT

Forces The unedited story.

35. Resolving Vectors (applications)

Friction Dynamics.

Presentation transcript:

Vector Worksheet 3 Answers 1. A box is being pulled across the floor by a rope at an angle of 50o to the horizontal. The tension in the rope is 100 N. (a) Find Fh, the horizontal component of the force on the rope. 100 N Fv 50o Fh Fh 100 100 cos 50 = 100 Fh = 100 cos 50 = Fh = 64.2 N

1. A box is being pulled across the floor by a rope at an angle of 50o to the horizontal. The tension in the rope is 125 N. (b) Find Fv, the vertical component of the force on the rope. 100 N Fv 50o 64.2 N Fv 100 100 sin 50 = 100 Fv = 100 sin 50 = Fv = 76.6 N

2. A plane is flying with a speed of 200 m/s at a bearing of 60o. (a) Determine the eastward component of the velocity. 0o 60o 270o 90o 180o

2. A plane is flying with a speed of 200 m/s at a bearing of 60o. (a) Determine the eastward component of the velocity. 200 m/s 60o vn 30o ve ve 200 200 cos 30 = 200 ve = 200 cos 30 = ve = 173 m/s

2. A plane is flying with a speed of 200 m/s at a bearing of 60o. (b) Determine the northward component of the velocity. 200 m/s 60o vn 30o 173 m/s vn 200 200 sin 30 = 200 vn = 200 sin 30 = vn = 100 m/s

2. A plane is flying with a speed of 200 m/s at a bearing of 60o. (c) How far east has the plane flown in 10 seconds? 200 m/s 60o 100 m/s 30o 173 m/s d = v t de = ve t = ( 173 m/s )( 10 s ) de = 1730 m

3. A plane is flying at a speed of 500 km/hr at a bearing of 240o. Find the westward component of the plane’s velocity. 0o 270o 90o 30o 180o 500 km/hr at 240o

3. A plane is flying at a speed of 525 km/hr at a bearing of 240o. Find the westward component of the plane’s velocity. vw vw = 500 cos 240 ? 30o vw = - 250 m/s 60o vw 500 km/hr vw 500 vw 500 500 cos 30 = 500 sin 60 = 500 500 vw = 500 cos 30 vw = 500 sin 60 vw = 433 km/hr vw = 433 km/hr

4. A rope is tied to a box on the floor and is held at angle of 60o to the horizontal. The box has a mass of 6.0 kg. A force of 100 N is exerted on the box via the rope. (a) Determine the vertical component of the force. Fv 100 100 N Fv 100 sin 60 = 100 60o 6.0 kg Fh Fv = 100 sin 60 Fv = 87 N

4. A rope is tied to a box on the floor and is held at angle of 60o to the horizontal. The box has a mass of 6.0 kg. A force of 85 N is exerted on the box via the rope. (b) Does the box stay on the floor, or is it pulled off the floor by the force? (Compare weight with Fv ) Wt. = m g 100 N 87 N = ( 6.0 kg )( 9.8 m/s2 ) 60o Wt. = 59 N 6.0 kg Fh Fv > Wt. Box pulled off floor Wt.