An aluminum cylinder with a radius of 2.7 cm and a height of 67 cm is used as one leg of a workbench. the workbench pushes down on the cylinder with a force of 3.2×104n. what is the compressive strain of the cylinder? young's modulus for aluminum is 7.0×1010pa. express your answer using two significant figures. compressive strain = nothing
by what distance does the cylinder's height decrease as a result of the forces on it?

Explanation:

r = Radius = 2.7 cm

F = Force =

A = Area =

= Stress =

E = Young's modulus =

= Strain

= Original length = 67 cm

= Change in length

Young's modulus is given by

Strain is

Strain is given by

The cylinder height decreases by

so easy. just google the electromagnetic waves and it’ll pop up.

force is based upon mass and acceleration.the statement is not always true.

it can be explained from newton's second law of motion.

as per newton's second law of motion the rate of change of momentum is directly proportional to the applied force and takes place along the direction of force.

mathematically it can be written as -

                                              ⇒      

here   k is the proportionality constant whose value is 1.

                                                            [a is the acceleration=dv/dt]

hence we see that force not only depends on mass and acceleration but also on velocity and rate of change of mass. force f will depend on mass and acceleration only when mass is constant.

hence the statement that force is based upon mass and acceleration is false.