Explanation Given information: t = 0 , x = 0 , v = 0 , x max = 1.2 f t When x = x max , v = 0 , | ( d a d t ) max | = 4.8 f t / s 2 Formula used: V a v e = u + 1 2 a t Calculation: In this problem we observe that v max must occur at t = 1 2 t min , the a − t curve must have the shape shown. Since we have. At, t = Δ t . ⇒ v = 0 + 1 2 ( Δ t ) ( a max ) . ⇒ 1 2 a m a x Δ t . t = 2 Δ t . ⇒ v max = 1 2 a max Δ t + 1 2 ( Δ t ) ( a max ) To determine (b) The maximum average value of the velocity at given condition.

Vector Mechanics for Engineers: Dynamics

11th Edition

ISBN: 9780077687342

Author: Ferdinand P. Beer, E. Russell Johnston Jr., Phillip J. Cornwell, Brian Self

Publisher: McGraw-Hill Education

See similar textbooks

Concept explainers

Power Transmission Elements

It is defined as the energy transfer from one location to another location. The energy will start moving from the energy generation source to the energy applied position to obtain the work output. From this method, a large amount of electric energy moves…

Videos

Question

Chapter 11.3, Problem 11.80P

To determine

(a)

The shortest time required for the belt to move 1.2 ft at given condition.

To determine

(b)

The maximum average value of the velocity at given condition.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Chapter 11.3, Problem 11.79P

Chapter 11.3, Problem 11.81P

Students have asked these similar questions

A block is sliding from rest on a plane inclined downward 30° from the horizontal. The vertical distance of the block from the level ground is 6 m. Coefficient of friction between the contact surfaces is 0.25.1. Which the following most nearly gives the initial acceleration, in m/s²? a. 3.912b. 2.781c. 4.214d. 5.1552. Which of the following most nearly gives the velocity of the block after moving a vertical distance of 3 m from rest, in m/s? a. 5.78b. 6.23c. 4.51d. 8.723. Which of the following most nearly gives the total time for the block to reach the ground, in seconds? a. 3.84b. 2.15c. 2.94d. 4.92

A cart, which is moving at a speed of 20 m / s, starts to suffer a force resulting from intensity 60 N, in the same direction and in the opposite direction to the speed. Knowing that F = ma, Where F is force, m is mass and a is acceleration. It appears that, after a time interval of 5.0 s, the speed is 5.0 m / s. The mass of the cart, in kg, is:Choose one:The. 50B. 20ç. 30d. 10e. 40

A 100-kg box is towed to move horizontally from rest by a constant force P=200 N. The kinetic friction is μk =0.1. The angle of the force P is θ=30° with respect to the horizontal direction. The acceleration due to gravity is g=9.81 m/s2. (7) Calculate the the velocity at 2 seconds v= ___(m/s ) (two decimal places).

Chapter 11 Solutions

Vector Mechanics for Engineers: Dynamics

Ch. 11.1 - A bus travels the 100 miles between A and B at 50...Ch. 11.1 - Two cars A and B race each other down a straight...Ch. 11.1 - A snowboarder starts from rest at the top of a...Ch. 11.1 - The motion of a particle is defined by the...Ch. 11.1 - The vertical motion of mass A is defined by the...Ch. 11.1 - A loaded railroad car is rolling at a constant...Ch. 11.1 - The motion of a particle is defined by the...Ch. 11.1 - The motion of a particle is defined by the...Ch. 11.1 - A girl operates a radio-controlled model ear in a...Ch. 11.1 - The motion of a particle is defined by the...

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.