Un corp de masa m=444 kg este ridicat cu ajutorul unui cablu cu viteza constanta. Stiind ca acceleratia gravitationala este g=10m/s2 sa se calculeze tensiunea din cablu T. Alegeți o opțiune:
a. 444
b. 4440
c. 44.400

4440N

Explanation:

Given parameters:

Mass  = 444kg

Acceleration due to gravity  = 10m/s²  

Unknown:

Tension in the cable  = ?

Solution:

The tension in the cable is due to the weight of the mass it is suspending.

  So;

  Weight  = mass x acceleration due to gravity

 Weight  = 444 x 10  = 4440N

the order for strong to weak forces such as

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force

the fundamental forces are those forces that act between to objects or element to make interactions. there are four types of fundamental forces such as strong and weak nuclear forces (due to protons and electrons), electromagnetic force (due to the motion of electrons) and gravitational force (due to orbital movement of the planet). if these forces are arranged on the basis of their maximum strength then the order is

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2