extension (e), or increase in length, is measured in
metres (m)
What is the unit for extension in physics?
Extension and compression
spring constant (k) is measured in
newtons per metre (N/m)
extension, or increase in length (x), is measured in metres (m)
What is the formula for extension?
e is extension = (l-l
o
); l
is the stretched length and l
o
is original length, and. k is the gradient of the graph above. It is known as the spring constant.
What is unit of spring constant?
The rate or spring constant, k, relates the force to the extension in SI units:
N/m or kg/s2
.
What is the unit of elastic potential energy?
Calculating elastic potential energy
elastic potential energy (E
e
) is measure in
joules (J)
spring constant (k) is measured in newtons per metre (N/m)
What is the SI unit of Young’s modulus?
Units of Young’s Modulus:
The SI unit for Young’s modulus is
Pascal (Pa)
. The Dimensional formula for Y is [ML
– 1
T
– 2
]. The values are most often expressed in terms of megapascal (MPa), Newtons per square millimeter (N/mm
2
), gigapascals (GPa), or kilonewtons per square millimeter (kN/mm
2
).
How do you calculate Young’s modulus extension?
The Young’s modulus (E) is a property of the material that tells us how easily it can stretch and deform and is defined as the ratio of tensile stress (σ) to tensile strain (ε). Where stress is the amount of force applied per unit area (σ = F/A) and strain is extension per unit length (
ε = dl/l
).
What is formula for mass?
One way to calculate mass:
Mass = volume × density
. Weight is the measure of the gravitational force acting on a mass. The SI unit of mass is “kilogram”.
How do you calculate extension load?
- d = Wire size.
- D = Mean Diameter.
- N = Number of active coils.
- Rf = Rate of extension spring (in lbs./inch)
- S = Stress (lbs. / Sq. Inch)
- P = Load (lbs)
- M = Moment (inch-lbs.)
- D / d = Index correction (developed from Wahl Factor)
What is work done formula?
Mathematically, the concept of work done W equals the force f times the distance (d), that is W = f. d and if the force is exerted at an angle θ to the displacement, then work done is calculated as
W = f . d cos θ
.
What is the SI unit of K?
The kelvin
, symbol K, is the SI unit of thermodynamic temperature. It is defined by taking the fixed numerical value of the Boltzmann constant k to be 1.380 649 x 10
– 23
when expressed in the unit J K
– 1
, which is equal to kg m
2
s
– 2
K
– 1
, where the kilogram, metre and second are defined in terms of h, c and Δν
Cs
.
What is the K in F KX?
The proportional constant k is called
the spring constant
. It is a measure of the spring’s stiffness. When a spring is stretched or compressed, so that its length changes by an amount x from its equilibrium length, then it exerts a force F = -kx in a direction towards its equilibrium position.
What is the SI unit of mass?
The SI unit of mass is
the kilogram (kg)
. … Thus, the SI unit of the quantity weight defined in this way (force) is the newton (N).
What is K and U in physics?
and. E
= U + K = constant
. The work-energy theorem discussed in Chapter 7 relates the amount of work W to the change in the kinetic energy of the system. W = [Delta]K. The change in the potential energy of the system can now be related to the amount of work done on the system.
How do we calculate efficiency?
The work efficiency formula is
efficiency = output / input
, and you can multiply the result by 100 to get work efficiency as a percentage. This is used across different methods of measuring energy and work, whether it’s energy production or machine efficiency.
How work done is measured?
work done (W) is measured in
joules (J)
force (F) is measured in newtons (N) distance (d) is in the same direction as the force and is measured in metres (m)
